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<document id="F0ACA78DC964F0F967F3FEC3D78BC8C0" ID-CLB-Dataset="8090" ID-DOI="10.5252/zoosystema2021v43a4" ID-GBIF-Dataset="f5c1cc3b-055c-41a7-8b9b-80a136141bad" ID-ISSN="1638-9387" ID-Zenodo-Dep="4555463" ID-ZooBank="urn:lsid:zoobank.org:pub:4F2A16F1-B100-4236-AD31-945896D6F910" IM.bibliography_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1614000280982" checkinUser="felipe" docAuthor="Williams, Jason D. &amp; Boyko, Christopher B." docDate="2021" docId="038487EEAB3AFFFEFEDEFC5755FAF91C" docLanguage="en" docName="Zoosystema.43.4.79-100.pdf.imf" docOrigin="Zoosystema 43 (4)" docStyle="DocumentStyle:5CC576F744449C1860B4E72ABD884631.7:Zoosystema.2020-.journal_article" docStyleId="5CC576F744449C1860B4E72ABD884631" docStyleName="Zoosystema.2020-.journal_article" docStyleVersion="7" docTitle="Akrophryxus milvus Williams &amp; Boyko 2021, n. sp." docType="treatment" docUuid="AC0E5AFB-69BB-434D-86A6-A679F9EACDBC" docUuidSource="ZooBank" docVersion="9" lastPageNumber="86" masterDocId="FFBDFF96AB32FFF4FFE7FFE3575BFF91" masterDocTitle="Out on a limb: novel morphology and position on appendages of two new genera and three new species of ectoparasitic isopods (Epicaridea: Dajidae) infesting isopod and decapod hosts" masterLastPageNumber="100" masterPageNumber="79" pageNumber="85" updateTime="1698930744828" updateUser="ExternalLinkService" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="C8A976216169B843706E46D5F337542C">Out on a limb: novel morphology and position on appendages of two new genera and three new species of ectoparasitic isopods (Epicaridea: Dajidae) infesting isopod and decapod hosts</mods:title>
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<mods:roleTerm id="811D4AFC9FD8B8949A57AFC5BF898F2C">Author</mods:roleTerm>
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<mods:namePart id="AF9D229FE467CA4744B115BF4C75CEC5">Williams, Jason D.</mods:namePart>
<mods:affiliation id="B3F4210C43EBFD87C5870AE134384C55">Department of Biology, Hofstra University, 1000 Hempstead Turnpike, Hempstead, NY 11549 (USA) jason. d. williams @ hofstra. edu (corresponding author)</mods:affiliation>
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<mods:name id="9DAE0E4CC76AA1A2A46EAA9FFF5223AD" type="personal">
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<mods:namePart id="8ECA7F8912F9F08F3C056774CADB6549">Boyko, Christopher B.</mods:namePart>
<mods:affiliation id="C9F09100A7B47359FB005C6E2DDA54FD">Department of Biology, Hofstra University, 1000 Hempstead Turnpike, Hempstead, NY 11549 (USA); and Division of Invertebrate Zoology, American Museum of Natural History, 200 Central Park West, New York, NY, 10024 (USA) cboyko @ amnh. org</mods:affiliation>
<mods:nameIdentifier id="5973B13EDA4D6AC08CB8751C9D984B6E" type="email">cboyko@amnh.org</mods:nameIdentifier>
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<mods:title id="C391C65D66848084F24702EB1F13CC08">Zoosystema</mods:title>
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<mods:date id="1926CCA932DEDBF0FD597697B9E9283D">2021</mods:date>
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<mods:number id="DBA551A6BA9130C2CC5665DC4AA86B88">2021-02-16</mods:number>
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<treatment id="038487EEAB3AFFFEFEDEFC5755FAF91C" ID-DOI="http://doi.org/10.5281/zenodo.4555507" ID-GBIF-Taxon="177590465" ID-Zenodo-Dep="4555507" LSID="urn:lsid:zoobank.org:act:AC0E5AFB-69BB-434D-86A6-A679F9EACDBC" httpUri="http://treatment.plazi.org/id/038487EEAB3AFFFEFEDEFC5755FAF91C" lastPageId="10" lastPageNumber="86" pageId="8" pageNumber="85">
<subSubSection id="C3376573AB3AFFFCFEDEFC575509FC5E" box="[313,594,948,975]" pageId="8" pageNumber="85" type="nomenclature">
<paragraph id="8B9236F8AB3AFFFCFEDEFC575509FC5E" blockId="8.[313,594,948,1007]" box="[313,594,948,975]" pageId="8" pageNumber="85">
<heading id="D0DA8194AB3AFFFCFEDEFC575509FC5E" box="[313,594,948,975]" centered="true" fontSize="11" level="2" pageId="8" pageNumber="85" reason="2">
<taxonomicName id="4C2D4D7BAB3AFFFCFEDEFC57554AFC5E" ID-CoL="846BY" authority="Williams &amp; Boyko, 2021" authorityName="Williams &amp; Boyko" authorityYear="2021" box="[313,529,948,975]" class="Malacostraca" family="Dajidae" genus="Akrophryxus" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="85" phylum="Arthropoda" rank="species" species="milvus" status="sp. nov.">
<emphasis id="B959EAEAAB3AFFFCFEDEFC57554AFC5E" bold="true" box="[313,529,948,975]" italics="true" pageId="8" pageNumber="85">Akrophryxus milvus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26A5791AB3AFFFCFDF0FC565509FC5E" box="[535,594,949,975]" pageId="8" pageNumber="85" rank="species">n. sp.</taxonomicNameLabel>
</heading>
</paragraph>
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<subSubSection id="C3376573AB3AFFFCFE86FC3755A8FBB2" pageId="8" pageNumber="85" type="description">
<paragraph id="8B9236F8AB3AFFFCFE86FC375571FC7E" blockId="8.[313,594,948,1007]" box="[353,554,980,1007]" pageId="8" pageNumber="85">
(
<figureCitation id="13162A7DAB3AFFFCFE8FFC375698FC7E" box="[360,451,980,1007]" captionStart-0="FIG" captionStart-1="FIG" captionStart-2="FIG" captionStartId-0="8.[133,144,833,851]" captionStartId-1="9.[131,142,1251,1269]" captionStartId-2="10.[132,143,1260,1278]" captionTargetBox-0="[134,1456,193,795]" captionTargetBox-1="[151,1398,223,1206]" captionTargetBox-2="[134,1432,227,1205]" captionTargetId-0="figure-624@8.[134,1456,215,788]" captionTargetId-1="graphics-585@9.[151,1378,223,1206]" captionTargetId-2="graphics-563@10.[134,1418,227,1205]" captionTargetPageId-0="8" captionTargetPageId-1="9" captionTargetPageId-2="10" captionText-0="FIG. 3. — Akrophryxus milvus n. gen., n. sp.,holotype female,MNHN-IU-2014-20314, attached to Ethusa machaera Castro,2005,macropod images:A, dorsal view of host, showing parasite attached to left antennule; B, ventral view of host, lateral view of parasite showing attachment to left antennule. Scale bars: A,B: 1 mm." captionText-1="FIG. 4. — Akrophryxus milvus n. gen., n. sp., holotype female, MNHN-IU-2014-20314: A, posterior view, proximal end of host antenna extending from body of parasite at top; B, host antennule, middle segment showing attachment sight of parasite with three holes created by mouthparts;C, lateral view, left side showing proximal end of host antenna extending from body of parasite; D, anterior view (opposite side to that shown in A; proximal end of host antenna facing viewer); E, lateral view, right side, outer membrane of parasite removed showing brood of developing eggs (dashed circles) and position of male shown by grey outline; F, lateral view, right side with eggs removed and showing position of host antenna (arrow indicates distal end); G, lateral view, right side with host antenna and eggs removed showing mouthparts (MO), antenna (A2), maxilliped (Ma) and pereopods (1 and 5 labeled). In figures A, C, D, and E, the three circular medial holes in pleon are labeled (hole surrounding antennule of host and closest to mouthparts, H1; hole at midpoint, H2; hole farthest from mouthparts, H3). Scale bars: A, C-G, 1 mm; B, 250 µm." captionText-2="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi-0="http://doi.org/10.5281/zenodo.4555471" figureDoi-1="http://doi.org/10.5281/zenodo.4555473" figureDoi-2="http://doi.org/10.5281/zenodo.4555475" httpUri-0="https://zenodo.org/record/4555471/files/figure.png" httpUri-1="https://zenodo.org/record/4555473/files/figure.png" httpUri-2="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Figs 3-5</figureCitation>
,
<figureCitation id="13162A7DAB3AFFFCFE28FC365579FC7E" box="[463,546,981,1007]" captionStart="FIG" captionStartId="17.[132,143,1735,1753]" captionTargetBox="[221,1359,228,1668]" captionTargetId="graphics-426@17.[221,1359,257,1668]" captionTargetPageId="17" captionText="FIG. 11. — Life-cycle diagram of the dajid isopod Prodajus ostendensis Gilson, 1909 parasitizing the opossum shrimp Gastrosaccus spinifer (Goës,1864): A, ovigerous female, ventral view. Eggs (shown in dashed circles) develop into early epicardium larvae and then molt once; B, mature epicaridium larvae released into the water column; C, mature epicaridium larvae find copepod intermediate host, attach and metamorphose into an ectoparasitic microniscus larva. Microniscus larva transforms into a cryptoniscus larva that detaches and is free-swimming; D, cryptoniscus larva settles on host mysid and invades marsupium; E, within the host marsupium the cryptoniscus larva transforms into a juvenile female; F, juvenile female, ventral view; G, another cryptoniscus larva (or larvae) settles and transforms into a dwarf male; H, host G. spinifer with ovigerous female P. ostendensis (in grey) occupying the marsupium; I, ovigerous female, lateral view with one dwarf male partially visible and eggs shown in dashed circles; J-M, developmental series of females of P. ostendensis, all in lateral view: J, cryptoniscus larva with oral sucker (OS); K, early juvenile female (second phase fide Gilson 1909); L, later juvenile female (third phase fide Gilson 1909); M, ovigerous female; N-R, proposed developmental series of females of Akrophryxus milvus n. gen., n. sp. and Telephryxus clypeus n. gen., n. sp.; N, cryptoniscus larva of T. clypeus n. gen., n. sp., dorsal view; O, hypothetical early juvenile female, lateral view; P, hypothetical later juvenile female of A. milvus n. gen., n. sp. attached to antennule of host (shown in grey), lateral view; Q, ovigerous female of A. milvus n. gen., n. sp. attached to antennule of host (shown in grey), lateral view; R, ovigerous female of A. milvus n. gen., n. sp. dissected to show attachment to antennule of host (shown in grey) with mouth (Mo) of parasite noted, lateral view (A, B, D-M, modified from figures in Gilson (1909); C, from G. O. Sars (1898)). Scale bars: A Q, R, 1 mm; E, 3 mm; N, 100 µm; rest not to scale." figureDoi="http://doi.org/10.5281/zenodo.4555490" httpUri="https://zenodo.org/record/4555490/files/figure.png" pageId="8" pageNumber="85">11Q, R</figureCitation>
)
</paragraph>
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<uri id="FFBC3AFAAB3AFFFCFF7FFBF255A8FBB2" box="[152,755,1041,1059]" pageId="8" pageNumber="85">
urn:lsid:zoobank.org:act:
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</subSubSection>
<subSubSection id="C3376573AB3AFFFCFF63FBA757AAFBE7" pageId="8" pageNumber="85" type="reference_group">
<paragraph id="8B9236F8AB3AFFFCFF63FBA757AAFBE7" blockId="8.[132,774,1092,1142]" pageId="8" pageNumber="85">
“sacculinid (? parasite attached to antennular fossa)” –
<bibRefCitation id="EFBC4B09AB3AFFFCFD24FBA757B6FBE7" author="Castro" firstAuthor="Castro" pageId="8" pageNumber="85" pagination="437 - 466" refId="ref15931" refString="CASTRO P. 2013. - Brachyuran crabs (Crustacea, Brachyura: Crossotonotidae, Ethusidae, Euryplacidae, Goneplacidae, Latreilliidae, Palicidae, Tetraliidae, Trapeziidae) of the MAINBAZA, MIRIKI, and ATIMO VATAE Expeditions to the Mozambique Channel and Madagascar, in AHYONG S. T., CHAN T. - Y., CORBARI L. &amp; NG P. K. L. (eds), Tropical Deep-Sea Benthos volume 27. Museum national d'Histoire naturelle, Paris, 501 p. (Memoires du Museum national d'Histoire naturelle; 204) 4: 437 - 466." type="book chapter" year="2013">Castro 2013: 443</bibRefCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C3376573AB3AFFFCFF63FB6D56BDFA52" pageId="8" pageNumber="85" type="materials_examined">
<paragraph id="8B9236F8AB3AFFFCFF63FB6D56F6FAD4" blockId="8.[132,777,1166,1402]" pageId="8" pageNumber="85">
<materialsCitation id="3B453CA5AB3AFFFCFF63FB6D56F6FAD4" ID-GBIF-Occurrence="3041244302" collectingDate="2010-05-12" collectionCode="TYPE MATERIAL" collectorName="Bouchet" country="Madagascar" elevation="866" latitude="-25.591167" location="Pointe Barrow" longLatPrecision="1" longitude="44.257" pageId="8" pageNumber="85" specimenCode="MNHN-IU-2014-20314" specimenCount="1" typeStatus="holotype">
<collectionCode id="ED3CAE3DAB3AFFFCFF63FB6D5656FB34" box="[132,269,1166,1189]" pageId="8" pageNumber="85">TYPE MATERIAL</collectionCode>
. —
<emphasis id="B959EAEAAB3AFFFCFED4FB6D56D7FB37" bold="true" box="[307,396,1166,1190]" pageId="8" pageNumber="85">
<typeStatus id="5496885AAB3AFFFCFED4FB6D56D7FB37" box="[307,396,1166,1190]" pageId="8" pageNumber="85" type="holotype">Holotype</typeStatus>
</emphasis>
.
<emphasis id="B959EAEAAB3AFFFCFE71FB6D555EFB37" bold="true" box="[406,517,1166,1190]" pageId="8" pageNumber="85">
<collectingCountry id="F33A7668AB3AFFFCFE71FB6D555EFB37" box="[406,517,1166,1190]" name="Madagascar" pageId="8" pageNumber="85">Madagascar</collectingCountry>
</emphasis>
•
<specimenCode id="DB8B9E83AB3AFFFCFDF1FB6D545AFB37" box="[534,769,1166,1190]" pageId="8" pageNumber="85">MNHN-IU-2014-20314</specimenCode>
; ovigerous female (
<quantity id="4CD59B1DAB3AFFFCFEDBFB4A56D6FB51" box="[316,397,1193,1217]" metricMagnitude="-3" metricUnit="m" metricValue="3.1" pageId="8" pageNumber="85" unit="mm" value="3.1">3.1 mm</quantity>
diameter), attached to left antennule of male
<taxonomicName id="4C2D4D7BAB3AFFFCFF3AFB205543FB4A" authority="Castro, 2005" authorityName="Castro" authorityYear="2005" box="[221,536,1219,1243]" class="Malacostraca" family="Ethusidae" genus="Ethusa" kingdom="Animalia" order="Decapoda" pageId="8" pageNumber="85" phylum="Arthropoda" rank="species" species="machaera">
<emphasis id="B959EAEAAB3AFFFCFF3AFB2056DCFB4A" box="[221,391,1219,1243]" italics="true" pageId="8" pageNumber="85">Ethusa machaera</emphasis>
Castro, 2005
</taxonomicName>
(
<quantity id="4CD59B1DAB3AFFFCFDCFFB205527FB4B" box="[552,636,1219,1243]" metricMagnitude="-3" metricUnit="m" metricValue="9.2" pageId="8" pageNumber="85" unit="mm" value="9.2">9.2 mm</quantity>
CL, 9.0 mm CW; MNHN-IU-2010-1997); Sta. CP 3595;
<geoCoordinate id="EE19503FAB3AFFFCFDB2FB3E5458FB64" box="[597,771,1245,1269]" degrees="25" direction="south" minutes="35" orientation="latitude" pageId="8" pageNumber="85" precision="1" seconds="28.2012" value="-25.591167">25°35’28.2012’’S</geoCoordinate>
,
<geoCoordinate id="EE19503FAB3AFFFCFF61FB1B5654FA81" box="[134,271,1272,1296]" degrees="44" direction="east" minutes="15" orientation="longitude" pageId="8" pageNumber="85" precision="1" seconds="25.2" value="44.257">44°15’25.2’’E</geoCoordinate>
; south of
<location id="8EF26023AB3AFFFCFE96FB1B56A4FA9E" LSID="urn:lsid:plazi:treatment:038487EEAB3AFFFEFEDEFC5755FAF91C:8EF26023AB3AFFFCFE96FB1B56A4FA9E" box="[369,511,1272,1296]" country="Madagascar" latitude="-25.591167" longLatPrecision="1" longitude="44.257" name="Pointe Barrow" pageId="8" pageNumber="85">Pointe Barrow</location>
;
<quantity id="4CD59B1DAB3AFFFCFDEDFB1B5520FA9E" box="[522,635,1272,1296]" metricMagnitude="2" metricUnit="m" metricValue="8.655" metricValueMax="9.1" metricValueMin="8.209999999999999" pageId="8" pageNumber="85" unit="m" value="865.5" valueMax="910.0" valueMin="821.0">
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; coll.
<collectorName id="26D8532EAB3AFFFCFD50FB1B5452FA81" box="[695,777,1272,1296]" pageId="8" pageNumber="85">Bouchet</collectorName>
<emphasis id="B959EAEAAB3AFFFCFF63FAF057E9FABB" box="[132,178,1298,1322]" italics="true" pageId="8" pageNumber="85">et al.</emphasis>
on the shrimper
<emphasis id="B959EAEAAB3AFFFCFEB1FAF056E7FABB" box="[342,444,1298,1322]" italics="true" pageId="8" pageNumber="85">Nosy Be 11</emphasis>
; ATIMO VATAE expedition, collected by trawling;
<date id="FF931038AB3AFFFCFED8FACE56F2FAD4" box="[319,425,1325,1349]" pageId="8" pageNumber="85" value="2010-05-12">
<collectingDate id="EFD7E9D0AB3AFFFCFED8FACE56F2FAD4" box="[319,425,1325,1349]" pageId="8" pageNumber="85" value="2010-05-12">12.V.2010</collectingDate>
</date>
.
</materialsCitation>
</paragraph>
<paragraph id="8B9236F8AB3AFFFCFF63FAAA5558FAEB" blockId="8.[132,777,1166,1402]" pageId="8" pageNumber="85">
<materialsCitation id="3B453CA5AB3AFFFCFF63FAAA5558FAEB" ID-GBIF-Occurrence="3041244307" collectingDate="2010-05-12" collectionCode="TYPE, MATERIAL, ATIMO, VATAE" collectorName="Bouchet" country="Madagascar" elevation="866" latitude="-25.591167" location="Pointe Barrow" longLatPrecision="1" longitude="44.257" pageId="8" pageNumber="85" specimenCount="1" typeStatus="allotype">
<emphasis id="B959EAEAAB3AFFFCFF63FAAA5781FAF0" bold="true" box="[132,218,1353,1377]" pageId="8" pageNumber="85">
<typeStatus id="5496885AAB3AFFFCFF63FAAA5781FAF0" box="[132,218,1353,1377]" pageId="8" pageNumber="85" type="allotype">Allotype</typeStatus>
</emphasis>
.
<emphasis id="B959EAEAAB3AFFFCFF0EFAA4563AFACE" bold="true" box="[233,353,1351,1375]" pageId="8" pageNumber="85">
<collectingCountry id="F33A7668AB3AFFFCFF0EFAA4563AFACE" box="[233,353,1351,1375]" name="Madagascar" pageId="8" pageNumber="85">Madagascar</collectingCountry>
</emphasis>
• MNHN-IU-2014-20315; mature male (
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L); same data as for holotype.
</materialsCitation>
</paragraph>
<paragraph id="8B9236F8AB3AFFFCFF63FA7156BDFA52" blockId="8.[132,775,1425,1476]" pageId="8" pageNumber="85">
<collectionCode id="ED3CAE3DAB3AFFFCFF63FA71564CFA39" box="[132,279,1426,1449]" pageId="8" pageNumber="85">TYPE LOCALITY</collectionCode>
. —
<geoCoordinate id="EE19503FAB3AFFFCFEA2FA7256AAFA38" box="[325,497,1425,1449]" degrees="25" direction="south" minutes="35" orientation="latitude" pageId="8" pageNumber="85" precision="1" seconds="28.2012" value="-25.591167">25°35’28.2012”S</geoCoordinate>
,
<geoCoordinate id="EE19503FAB3AFFFCFE1BFA7255DFFA38" box="[508,644,1425,1449]" degrees="44" direction="east" minutes="15" orientation="longitude" pageId="8" pageNumber="85" precision="1" seconds="25.2" value="44.257">44°15’25.2”E</geoCoordinate>
,
<collectingCountry id="F33A7668AB3AFFFCFD68FA725458FA38" box="[655,771,1425,1449]" name="Madagascar" pageId="8" pageNumber="85">Madagascar</collectingCountry>
, south of Pointe Barrow,
<quantity id="4CD59B1DAB3AFFFCFE96FA4F56B8FA52" box="[369,483,1452,1476]" metricMagnitude="2" metricUnit="m" metricValue="8.655" metricValueMax="9.1" metricValueMin="8.209999999999999" pageId="8" pageNumber="85" unit="m" value="865.5" valueMax="910.0" valueMin="821.0">
821-
<specimenCount id="9D2BFD71AB3AFFFCFE7AFA4F56B8FA52" box="[413,483,1452,1476]" pageId="8" pageNumber="85" type="generic">910 m</specimenCount>
</quantity>
.
</paragraph>
</subSubSection>
<subSubSection id="C3376573AB3AFFFCFF63FA3F57A9F99F" pageId="8" pageNumber="85" type="biology_ecology">
<paragraph id="8B9236F8AB3AFFFCFF63FA3F57A9F99F" blockId="8.[130,777,1499,1550]" pageId="8" pageNumber="85">
TYPE HOST. —
<taxonomicName id="4C2D4D7BAB3AFFFCFEF4FA385576FA62" authority="Castro, 2005" authorityName="Castro" authorityYear="2005" box="[275,557,1499,1523]" class="Malacostraca" family="Ethusidae" genus="Ethusa" kingdom="Animalia" order="Decapoda" pageId="8" pageNumber="85" phylum="Arthropoda" rank="species" species="machaera">
<emphasis id="B959EAEAAB3AFFFCFEF4FA3856F6FA62" box="[275,429,1499,1523]" italics="true" pageId="8" pageNumber="85">Ethusa machaera</emphasis>
Castro, 2005
</taxonomicName>
[Crustacea: Brachyura:
<taxonomicName id="4C2D4D7BAB3AFFFCFF65FA1557B3F99F" authorityName="Guinot" authorityYear="1977" box="[130,232,1526,1550]" class="Malacostraca" family="Ethusidae" kingdom="Animalia" order="Decapoda" pageId="8" pageNumber="85" phylum="Arthropoda" rank="family">Ethusidae</taxonomicName>
].
</paragraph>
</subSubSection>
<subSubSection id="C3376573AB3AFFFCFF63F9C55610F936" pageId="8" pageNumber="85" type="etymology">
<paragraph id="8B9236F8AB3AFFFCFF63F9C55610F936" blockId="8.[130,776,1573,1703]" pageId="8" pageNumber="85">ETYMOLOGY. — The species name is derived from the Latin for “kite” in reference to the plate partially surrounding the host antennule that is reminiscent of the shape of a kite shield, defensive armor used primarily in Western Europe in the 10th-13th centuries. The gender is masculine.</paragraph>
</subSubSection>
<subSubSection id="C3376573AB3AFFFCFF63F95C5453F946" box="[132,776,1727,1751]" pageId="8" pageNumber="85" type="distribution">
<paragraph id="8B9236F8AB3AFFFCFF63F95C5453F946" blockId="8.[132,776,1727,1751]" box="[132,776,1727,1751]" pageId="8" pageNumber="85">
DISTRIBUTION. — Known only from the
<typeStatus id="5496885AAB3AFFFCFDEDF95C5568F946" box="[522,563,1727,1751]" pageId="8" pageNumber="85">type</typeStatus>
locality and
<typeStatus id="5496885AAB3AFFFCFD4DF95C5588F946" box="[682,723,1727,1751]" pageId="8" pageNumber="85">type</typeStatus>
host.
</paragraph>
</subSubSection>
<subSubSection id="C3376573AB3AFFFDFF63F8F1545EF99C" lastPageId="9" lastPageNumber="86" pageId="8" pageNumber="85" type="description">
<paragraph id="8B9236F8AB3AFFFCFF63F8F1564EF8BB" blockId="8.[132,776,1810,2028]" box="[132,277,1810,1836]" pageId="8" pageNumber="85">DESCRIPTION</paragraph>
<paragraph id="8B9236F8AB3AFFFCFF63F8D25796F8DA" blockId="8.[132,776,1810,2028]" box="[132,205,1841,1867]" pageId="8" pageNumber="85">
<emphasis id="B959EAEAAB3AFFFCFF63F8D25796F8DA" box="[132,205,1841,1867]" italics="true" pageId="8" pageNumber="85">Female</emphasis>
</paragraph>
<paragraph id="8B9236F8AB3AFFFCFF63F8B25371F99C" blockId="8.[132,776,1810,2028]" lastBlockId="8.[811,1458,949,1549]" pageId="8" pageNumber="85">
Body spheroid, length and width nearly equal, filled with numerous eggs (
<figureCitation id="13162A7DAB3AFFFCFED1F89256F0F81D" box="[310,427,1905,1932]" captionStart="FIG" captionStartId="8.[133,144,833,851]" captionTargetBox="[134,1456,193,795]" captionTargetId="figure-624@8.[134,1456,215,788]" captionTargetPageId="8" captionText="FIG. 3. — Akrophryxus milvus n. gen., n. sp.,holotype female,MNHN-IU-2014-20314, attached to Ethusa machaera Castro,2005,macropod images:A, dorsal view of host, showing parasite attached to left antennule; B, ventral view of host, lateral view of parasite showing attachment to left antennule. Scale bars: A,B: 1 mm." figureDoi="http://doi.org/10.5281/zenodo.4555471" httpUri="https://zenodo.org/record/4555471/files/figure.png" pageId="8" pageNumber="85">Figs 3A, B</figureCitation>
;
<figureCitation id="13162A7DAB3AFFFCFE5FF8925680F81A" box="[440,475,1905,1931]" captionStart="FIG" captionStartId="9.[131,142,1251,1269]" captionTargetBox="[151,1398,223,1206]" captionTargetId="graphics-585@9.[151,1378,223,1206]" captionTargetPageId="9" captionText="FIG. 4. — Akrophryxus milvus n. gen., n. sp., holotype female, MNHN-IU-2014-20314: A, posterior view, proximal end of host antenna extending from body of parasite at top; B, host antennule, middle segment showing attachment sight of parasite with three holes created by mouthparts;C, lateral view, left side showing proximal end of host antenna extending from body of parasite; D, anterior view (opposite side to that shown in A; proximal end of host antenna facing viewer); E, lateral view, right side, outer membrane of parasite removed showing brood of developing eggs (dashed circles) and position of male shown by grey outline; F, lateral view, right side with eggs removed and showing position of host antenna (arrow indicates distal end); G, lateral view, right side with host antenna and eggs removed showing mouthparts (MO), antenna (A2), maxilliped (Ma) and pereopods (1 and 5 labeled). In figures A, C, D, and E, the three circular medial holes in pleon are labeled (hole surrounding antennule of host and closest to mouthparts, H1; hole at midpoint, H2; hole farthest from mouthparts, H3). Scale bars: A, C-G, 1 mm; B, 250 µm." figureDoi="http://doi.org/10.5281/zenodo.4555473" httpUri="https://zenodo.org/record/4555473/files/figure.png" pageId="8" pageNumber="85">4A</figureCitation>
, C-G). Cephalon externally indistinguishable from pereon, without eyes. Antennules absent, antennae each as oblong flat plate lateral to oral cone, covered with minute scales (not shown) (
<figureCitation id="13162A7DAB3AFFFCFDDEF83255CAF87A" box="[569,657,2001,2027]" captionStart="FIG" captionStartId="9.[131,142,1251,1269]" captionTargetBox="[151,1398,223,1206]" captionTargetId="graphics-585@9.[151,1378,223,1206]" captionTargetPageId="9" captionText="FIG. 4. — Akrophryxus milvus n. gen., n. sp., holotype female, MNHN-IU-2014-20314: A, posterior view, proximal end of host antenna extending from body of parasite at top; B, host antennule, middle segment showing attachment sight of parasite with three holes created by mouthparts;C, lateral view, left side showing proximal end of host antenna extending from body of parasite; D, anterior view (opposite side to that shown in A; proximal end of host antenna facing viewer); E, lateral view, right side, outer membrane of parasite removed showing brood of developing eggs (dashed circles) and position of male shown by grey outline; F, lateral view, right side with eggs removed and showing position of host antenna (arrow indicates distal end); G, lateral view, right side with host antenna and eggs removed showing mouthparts (MO), antenna (A2), maxilliped (Ma) and pereopods (1 and 5 labeled). In figures A, C, D, and E, the three circular medial holes in pleon are labeled (hole surrounding antennule of host and closest to mouthparts, H1; hole at midpoint, H2; hole farthest from mouthparts, H3). Scale bars: A, C-G, 1 mm; B, 250 µm." figureDoi="http://doi.org/10.5281/zenodo.4555473" httpUri="https://zenodo.org/record/4555473/files/figure.png" pageId="8" pageNumber="85">Figs 4G</figureCitation>
;
<figureCitation id="13162A7DAB3AFFFCFD7BF8325599F87D" box="[668,706,2001,2028]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">5G</figureCitation>
). Oral cone rounded (
<figureCitation id="13162A7DAB3AFFFCFC28FC56537EFC5E" box="[975,1061,949,975]" captionStart="FIG" captionStartId="9.[131,142,1251,1269]" captionTargetBox="[151,1398,223,1206]" captionTargetId="graphics-585@9.[151,1378,223,1206]" captionTargetPageId="9" captionText="FIG. 4. — Akrophryxus milvus n. gen., n. sp., holotype female, MNHN-IU-2014-20314: A, posterior view, proximal end of host antenna extending from body of parasite at top; B, host antennule, middle segment showing attachment sight of parasite with three holes created by mouthparts;C, lateral view, left side showing proximal end of host antenna extending from body of parasite; D, anterior view (opposite side to that shown in A; proximal end of host antenna facing viewer); E, lateral view, right side, outer membrane of parasite removed showing brood of developing eggs (dashed circles) and position of male shown by grey outline; F, lateral view, right side with eggs removed and showing position of host antenna (arrow indicates distal end); G, lateral view, right side with host antenna and eggs removed showing mouthparts (MO), antenna (A2), maxilliped (Ma) and pereopods (1 and 5 labeled). In figures A, C, D, and E, the three circular medial holes in pleon are labeled (hole surrounding antennule of host and closest to mouthparts, H1; hole at midpoint, H2; hole farthest from mouthparts, H3). Scale bars: A, C-G, 1 mm; B, 250 µm." figureDoi="http://doi.org/10.5281/zenodo.4555473" httpUri="https://zenodo.org/record/4555473/files/figure.png" pageId="8" pageNumber="85">Fig. 4G</figureCitation>
); mouthparts indistinct. Maxillipeds ovate with recurved digitiform extension (
<figureCitation id="13162A7DAB3AFFFCFB1CFC37520EFC7E" box="[1275,1365,980,1007]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5H</figureCitation>
). Pereopods 1-5 subequal in size and shape, without setae (
<figureCitation id="13162A7DAB3AFFFCFAB5FC1752F1FB9E" box="[1362,1450,1012,1039]" captionStart="FIG" captionStartId="9.[131,142,1251,1269]" captionTargetBox="[151,1398,223,1206]" captionTargetId="graphics-585@9.[151,1378,223,1206]" captionTargetPageId="9" captionText="FIG. 4. — Akrophryxus milvus n. gen., n. sp., holotype female, MNHN-IU-2014-20314: A, posterior view, proximal end of host antenna extending from body of parasite at top; B, host antennule, middle segment showing attachment sight of parasite with three holes created by mouthparts;C, lateral view, left side showing proximal end of host antenna extending from body of parasite; D, anterior view (opposite side to that shown in A; proximal end of host antenna facing viewer); E, lateral view, right side, outer membrane of parasite removed showing brood of developing eggs (dashed circles) and position of male shown by grey outline; F, lateral view, right side with eggs removed and showing position of host antenna (arrow indicates distal end); G, lateral view, right side with host antenna and eggs removed showing mouthparts (MO), antenna (A2), maxilliped (Ma) and pereopods (1 and 5 labeled). In figures A, C, D, and E, the three circular medial holes in pleon are labeled (hole surrounding antennule of host and closest to mouthparts, H1; hole at midpoint, H2; hole farthest from mouthparts, H3). Scale bars: A, C-G, 1 mm; B, 250 µm." figureDoi="http://doi.org/10.5281/zenodo.4555473" httpUri="https://zenodo.org/record/4555473/files/figure.png" pageId="8" pageNumber="85">Figs 4G</figureCitation>
;
<figureCitation id="13162A7DAB3AFFFCFCCAFBF75431FBBE" box="[813,874,1044,1071]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">5E, F</figureCitation>
); dactylus short, recurved, propodus carpus and merus fused, ischia and bases stout. Oostegite 1 largest (
<figureCitation id="13162A7DAB3AFFFCFAA9FBD752F2FBDF" box="[1358,1449,1076,1102]" captionStart="FIG" captionStartId="9.[131,142,1251,1269]" captionTargetBox="[151,1398,223,1206]" captionTargetId="graphics-585@9.[151,1378,223,1206]" captionTargetPageId="9" captionText="FIG. 4. — Akrophryxus milvus n. gen., n. sp., holotype female, MNHN-IU-2014-20314: A, posterior view, proximal end of host antenna extending from body of parasite at top; B, host antennule, middle segment showing attachment sight of parasite with three holes created by mouthparts;C, lateral view, left side showing proximal end of host antenna extending from body of parasite; D, anterior view (opposite side to that shown in A; proximal end of host antenna facing viewer); E, lateral view, right side, outer membrane of parasite removed showing brood of developing eggs (dashed circles) and position of male shown by grey outline; F, lateral view, right side with eggs removed and showing position of host antenna (arrow indicates distal end); G, lateral view, right side with host antenna and eggs removed showing mouthparts (MO), antenna (A2), maxilliped (Ma) and pereopods (1 and 5 labeled). In figures A, C, D, and E, the three circular medial holes in pleon are labeled (hole surrounding antennule of host and closest to mouthparts, H1; hole at midpoint, H2; hole farthest from mouthparts, H3). Scale bars: A, C-G, 1 mm; B, 250 µm." figureDoi="http://doi.org/10.5281/zenodo.4555473" httpUri="https://zenodo.org/record/4555473/files/figure.png" pageId="8" pageNumber="85">Figs 4G</figureCitation>
;
<figureCitation id="13162A7DAB3AFFFCFCC9FBB75413FBFE" box="[814,840,1108,1135]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">5J</figureCitation>
), broadly ovate with small posterior accessory lobe, broad lobe medially divided in lateral view (
<figureCitation id="13162A7DAB3AFFFCFB32FB975275FB1E" box="[1237,1326,1140,1167]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5K</figureCitation>
); oostegites 2/3, 4, 5 progressively larger; oostegite 2 present, thin and closely applied to oostegite 3, lobes subequal in size and shape (
<figureCitation id="13162A7DAB3AFFFCFCD5FB3754DAFB7F" box="[818,897,1235,1262]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5L</figureCitation>
); oostegite 3 subtriangular (
<figureCitation id="13162A7DAB3AFFFCFB45FB3753AAFB7F" box="[1186,1265,1235,1262]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5L</figureCitation>
), expanded posteriorly, medial and anterior finger-like extensions present with small setae distally, oostegites 4 and 5 subquadrate, small setae on medial and posterior margins (
<figureCitation id="13162A7DAB3AFFFCFB79FAD053A1FADF" box="[1182,1274,1331,1358]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5M</figureCitation>
). Pleon presumably modified (see Discussion) as oblong, narrow, thickened plate (
<figureCitation id="13162A7DAB3AFFFCFC88FA9054F6FA1C" box="[879,941,1395,1421]" captionStart="FIG" captionStartId="9.[131,142,1251,1269]" captionTargetBox="[151,1398,223,1206]" captionTargetId="graphics-585@9.[151,1378,223,1206]" captionTargetPageId="9" captionText="FIG. 4. — Akrophryxus milvus n. gen., n. sp., holotype female, MNHN-IU-2014-20314: A, posterior view, proximal end of host antenna extending from body of parasite at top; B, host antennule, middle segment showing attachment sight of parasite with three holes created by mouthparts;C, lateral view, left side showing proximal end of host antenna extending from body of parasite; D, anterior view (opposite side to that shown in A; proximal end of host antenna facing viewer); E, lateral view, right side, outer membrane of parasite removed showing brood of developing eggs (dashed circles) and position of male shown by grey outline; F, lateral view, right side with eggs removed and showing position of host antenna (arrow indicates distal end); G, lateral view, right side with host antenna and eggs removed showing mouthparts (MO), antenna (A2), maxilliped (Ma) and pereopods (1 and 5 labeled). In figures A, C, D, and E, the three circular medial holes in pleon are labeled (hole surrounding antennule of host and closest to mouthparts, H1; hole at midpoint, H2; hole farthest from mouthparts, H3). Scale bars: A, C-G, 1 mm; B, 250 µm." figureDoi="http://doi.org/10.5281/zenodo.4555473" httpUri="https://zenodo.org/record/4555473/files/figure.png" pageId="8" pageNumber="85">Fig. 4</figureCitation>
A-G) partially surrounding host antennule with three circular medial holes: largest surrounding antennule of host and closest to mouthparts of parasite, smallest hole at midpoint of plate, intermediate sized hole farthest from mouthparts of parasite.
</paragraph>
<paragraph id="8B9236F8AB3AFFFCFCCAF9D15439F9DD" blockId="8.[811,1457,1586,2028]" box="[813,866,1586,1612]" pageId="8" pageNumber="85">
<emphasis id="B959EAEAAB3AFFFCFCCAF9D15439F9DD" box="[813,866,1586,1612]" italics="true" pageId="8" pageNumber="85">Male</emphasis>
</paragraph>
<paragraph id="8B9236F8AB3AFFFDFCCAF9B1545EF99C" blockId="8.[811,1457,1586,2028]" lastBlockId="9.[130,775,1491,1549]" lastPageId="9" lastPageNumber="86" pageId="8" pageNumber="85">
Body not recurved ventrally (
<figureCitation id="13162A7DAB3AFFFCFB93F9B153B0F9FC" box="[1140,1259,1618,1645]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5A, B</figureCitation>
). Cephalon fused with pereomere 1 (
<figureCitation id="13162A7DAB3AFFFCFBE2F9915326F91C" box="[1029,1149,1650,1677]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5A, B</figureCitation>
), anterior margin rounded, posterolateral margins evenly rounded; lacking eyes, cephalic slits present. Antennules reduced, each apparently composed of three flattened disc-shaped segments (
<figureCitation id="13162A7DAB3AFFFCFB11F9315214F97C" box="[1270,1359,1746,1773]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5C</figureCitation>
); antennae each as single broad elongate lobes lateral to oral cone, flagella absent (
<figureCitation id="13162A7DAB3AFFFCFC34F8F15371F8BD" box="[979,1066,1809,1836]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5C</figureCitation>
). Oral cone triangular (
<figureCitation id="13162A7DAB3AFFFCFACBF8F152F9F8BD" box="[1324,1442,1809,1836]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5B, C</figureCitation>
). Pereomeres 2-6 distinct, 4-6 subequal in width, others slightly narrower (
<figureCitation id="13162A7DAB3AFFFCFC7DF8B25350F8FD" box="[922,1035,1873,1900]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5A, B</figureCitation>
); pereomere 7 fused with pleon, lateral margins recurved ventrally. Pereopods 1-6 subequal in size and shape, all segments distinct, carpi rounded, ischia short, bases elongate; dactylus, propodus and carpus with isolated marginal setae (
<figureCitation id="13162A7DAB3AFFFCFC33F832534AF87D" box="[980,1041,2001,2028]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="8" pageNumber="85">Fig. 5</figureCitation>
B-D); pereopod 7 lacking. Pleon compact, rounded, all segments fused and fused with pereomere 7, rounded posteriorly; anal slit and pleopods lacking (
<figureCitation id="13162A7DAB3BFFFDFD68FA1055A3F99C" box="[655,760,1522,1549]" captionStart="FIG" captionStartId="10.[132,143,1260,1278]" captionTargetBox="[134,1432,227,1205]" captionTargetId="graphics-563@10.[134,1418,227,1205]" captionTargetPageId="10" captionText="FIG. 5. — Akrophryxus milvus n.gen., n. sp., allotype male (A-D; MNHN-IU-2014-20315) and holotype female (E-M; MNHN-IU-2014-20314): A, dorsal view;B, ventral view; C, ventral view of anterior end showing left antennule (A1), left antenna (A2), mouthparts (MO) and first pereopods; D, right pereopod 6; E, pereopods 1-5 from left side (1 and 5 labeled with numbers); F, pereopod 3 from left side; G, antenna from left side, covered in scales (not shown); H, left maxilliped, ventral view, arrow shows digitiform extension that is inserted in fold of oostegite 1 in part K (shown by arrowhead); I, left maxilliped, lateral view; J, left oostegite 1, ventral view; K, left oostegite 1, lateral view showing fold where digitiform extension of maxilliped resides (arrowhead); L, left oostegite 3, anterior portion of oostegite 2 shown by arrowhead and in dashed line; M, left oostegite 5. In Figures 2G, H-K, and M asterisks show site of attachment for structures dissected from body of parasite. Scale bars: A, B, G, L, M, 100 µm; C, D, 25 µm; E, H-K, 250 µm; F, 50 µm." figureDoi="http://doi.org/10.5281/zenodo.4555475" httpUri="https://zenodo.org/record/4555475/files/figure.png" pageId="9" pageNumber="86">Fig. 5A, B</figureCitation>
).
</paragraph>
</subSubSection>
<caption id="DF526670AB3BFFFDFF64FB005605FA05" ID-DOI="http://doi.org/10.5281/zenodo.4555473" ID-Zenodo-Dep="4555473" httpUri="https://zenodo.org/record/4555473/files/figure.png" pageId="9" pageNumber="86" startId="9.[131,142,1251,1269]" targetBox="[151,1398,223,1206]" targetPageId="9">
<paragraph id="8B9236F8AB3BFFFDFF64FB005605FA05" blockId="9.[131,1457,1251,1428]" pageId="9" pageNumber="86">
FIG. 4. —
<taxonomicName id="4C2D4D7BAB3BFFFDFF31FB005623FB64" authority="Williams &amp; Boyko, 2021" authorityName="Williams &amp; Boyko" authorityYear="2021" box="[214,376,1251,1269]" class="Malacostraca" family="Dajidae" genus="Akrophryxus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="86" phylum="Arthropoda" rank="species" species="milvus" status="n. gen., n. sp.">
<emphasis id="B959EAEAAB3BFFFDFF31FB005623FB64" box="[214,376,1251,1269]" italics="true" pageId="9" pageNumber="86">Akrophryxus milvus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26A5791AB3BFFFDFE9AFB0056AEFB64" box="[381,501,1251,1269]" pageId="9" pageNumber="86" rank="species">n. gen., n. sp.</taxonomicNameLabel>
, holotype female, MNHN-IU-2014-20314:
<emphasis id="B959EAEAAB3BFFFDFCB1FB005438FB64" bold="true" box="[854,867,1251,1269]" pageId="9" pageNumber="86">A</emphasis>
, posterior view, proximal end of host antenna extending from body of parasite at top;
<emphasis id="B959EAEAAB3BFFFDFEE2FB195649FA9D" bold="true" box="[261,274,1274,1292]" pageId="9" pageNumber="86">B</emphasis>
, host antennule, middle segment showing attachment sight of parasite with three holes created by mouthparts;
<emphasis id="B959EAEAAB3BFFFDFB4FFB1953EDFA9D" bold="true" box="[1192,1206,1274,1292]" pageId="9" pageNumber="86">C</emphasis>
, lateral view, left side showing proximal end of host antenna extending from body of parasite;
<emphasis id="B959EAEAAB3BFFFDFD72FAF255F8FAB2" bold="true" box="[661,675,1297,1315]" pageId="9" pageNumber="86">D</emphasis>
, anterior view (opposite side to that shown in
<emphasis id="B959EAEAAB3BFFFDFBC2FAF25369FAB2" bold="true" box="[1061,1074,1297,1315]" pageId="9" pageNumber="86">A</emphasis>
; proximal end of host antenna facing viewer);
<emphasis id="B959EAEAAB3BFFFDFF63FAC457CBFAA8" bold="true" box="[132,144,1319,1337]" pageId="9" pageNumber="86">E</emphasis>
, lateral view, right side, outer membrane of parasite removed showing brood of developing eggs (dashed circles) and position of male shown by grey outline;
<emphasis id="B959EAEAAB3BFFFDFF63FADD57D4FAC1" bold="true" box="[132,143,1342,1360]" pageId="9" pageNumber="86">F</emphasis>
, lateral view, right side with eggs removed and showing position of host antenna (arrow indicates distal end);
<emphasis id="B959EAEAAB3BFFFDFBC4FADD536AFAC1" bold="true" box="[1059,1073,1342,1360]" pageId="9" pageNumber="86">G</emphasis>
, lateral view, right side with host antenna and eggs removed showing mouthparts (
<emphasis id="B959EAEAAB3BFFFDFE54FAB65694FAF7" bold="true" box="[435,463,1365,1383]" pageId="9" pageNumber="86">MO</emphasis>
), antenna (
<emphasis id="B959EAEAAB3BFFFDFDCDFAB65519FAF6" bold="true" box="[554,578,1365,1383]" pageId="9" pageNumber="86">A2</emphasis>
), maxilliped (
<emphasis id="B959EAEAAB3BFFFDFD49FAB65591FAF6" bold="true" box="[686,714,1365,1383]" pageId="9" pageNumber="86">Ma</emphasis>
) and pereopods (1 and 5 labeled). In figures A, C, D, and E, the three circular medial holes in pleon are labeled (hole surrounding antennule of host and closest to mouthparts,
<emphasis id="B959EAEAAB3BFFFDFCAFFA8F543BFAEF" bold="true" box="[840,864,1388,1406]" pageId="9" pageNumber="86">H1</emphasis>
; hole at midpoint,
<emphasis id="B959EAEAAB3BFFFDFBE7FA8F5343FAEF" bold="true" box="[1024,1048,1388,1406]" pageId="9" pageNumber="86">H2</emphasis>
; hole farthest from mouthparts,
<emphasis id="B959EAEAAB3BFFFDFACEFA8F521AFAEF" bold="true" box="[1321,1345,1388,1406]" pageId="9" pageNumber="86">H3</emphasis>
). Scale bars: A, C-G, 1 mm; B, 250 µm.
</paragraph>
</caption>
<subSubSection id="C3376573AB3BFFFEFF63F9D055FAF91C" lastPageId="10" lastPageNumber="87" pageId="9" pageNumber="86" type="discussion">
<paragraph id="8B9236F8AB3BFFFDFF63F9D057B3F9DA" blockId="9.[130,777,1587,2028]" box="[132,232,1587,1613]" pageId="9" pageNumber="86">REMARKS</paragraph>
<paragraph id="8B9236F8AB3BFFFDFF63F9B15375F91C" blockId="9.[130,777,1587,2028]" lastBlockId="9.[811,1457,1491,2028]" pageId="9" pageNumber="86">
The female of
<taxonomicName id="4C2D4D7BAB3BFFFDFEC6F9B156B5F9FD" authority="Williams &amp; Boyko, 2021" authorityName="Williams &amp; Boyko" authorityYear="2021" box="[289,494,1618,1644]" class="Malacostraca" family="Dajidae" genus="Akrophryxus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="86" phylum="Arthropoda" rank="species" species="milvus" status="n. gen., n. sp.">
<emphasis id="B959EAEAAB3BFFFDFEC6F9B156B5F9FD" box="[289,494,1618,1644]" italics="true" pageId="9" pageNumber="86">Akrophryxus milvus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26A5791AB3BFFFDFE11F9B055D7F9FC" box="[502,652,1619,1645]" pageId="9" pageNumber="86" rank="species">n. gen., n. sp.</taxonomicNameLabel>
is very different from those in all other dajids, excepting
<emphasis id="B959EAEAAB3BFFFDFD68F9915791F93D" italics="true" pageId="9" pageNumber="86">
<taxonomicName id="4C2D4D7BAB3BFFFDFD68F991545CF91D" authority="Williams &amp; Boyko, 2021" authorityName="Williams &amp; Boyko" authorityYear="2021" box="[655,775,1650,1676]" class="Malacostraca" family="Dajidae" genus="Telephryxus" higherTaxonomySource="CoL" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="96" phylum="Arthropoda" rank="genus" status="gen. nov.">Telephryxus</taxonomicName>
clypeus
</emphasis>
n. gen., n. sp. (
<tableCitation id="C6AF0343AB3BFFFDFE9BF9715694F93D" box="[380,463,1682,1708]" captionStart="TABLE" captionStartId="18.[132,143,219,237]" captionTargetPageId="18" captionText="TABLE 1. — Comparative characters of females in the 20 genera of Dajidae G. O. Sars, 1883. Higher level host taxon and the position on hosts or attachment site of the parasites,if known,is indicated in the first column. Two genera have no described females.Species of Dolichophryxus Schultz,1977 and Paraspidophryxus Schultz, 1977 described from cryptoniscus larva only, hosts are unknown." httpUri="http://table.plazi.org/id/DF526670AB20FFE6FF63FF3855B7FE8B" pageId="9" pageNumber="86" tableUuid="DF526670AB20FFE6FF63FF3855B7FE8B">Table 1</tableCitation>
). The spheroid shape of the body and possession of a plate partially surrounding the host antennule are shared only by these two genera. The male of
<taxonomicName id="4C2D4D7BAB3BFFFDFF62F91157BEF89D" authority="Williams &amp; Boyko, 2021" authorityName="Williams &amp; Boyko" authorityYear="2021" box="[133,229,1778,1804]" class="Malacostraca" family="Dajidae" genus="Akrophryxus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="86" phylum="Arthropoda" rank="species" species="milvus" status="n. gen., n. sp.">
<emphasis id="B959EAEAAB3BFFFDFF62F91157CEF89D" box="[133,149,1778,1804]" italics="true" pageId="9" pageNumber="86">A</emphasis>
.
<emphasis id="B959EAEAAB3BFFFDFF46F91157BEF89D" box="[161,229,1778,1804]" italics="true" pageId="9" pageNumber="86">milvus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26A5791AB3BFFFDFF0DF9105628F89D" box="[234,371,1778,1804]" pageId="9" pageNumber="86" rank="species">
<emphasis id="B959EAEAAB3BFFFDFF0DF910566FF89D" box="[234,308,1779,1804]" italics="true" pageId="9" pageNumber="86">n. gen.,</emphasis>
n. sp.
</taxonomicNameLabel>
is likewise very different from those in all other dajid genera (
<tableCitation id="C6AF0343AB3BFFFDFE95F8F1569DF8BD" box="[370,454,1810,1836]" captionStart="TABLE" captionStartId="19.[132,143,219,237]" captionTargetPageId="19" captionText="TABLE 2. — Comparative characters of males in the 20 genera of Dajidae G. O. Sars, 1883 (five genera have no described males: Antephyra Schultz, 1978, Prophryxus Richardson, 1909, and Streptodajus Nierstrasz &amp; Brender à Brandis, 1923 are known from females only; species of Dolichophryxus Schultz, 1977 and Paraspidophryxus Schultz, 1977 are known from cryptoniscus larvae only)." httpUri="http://table.plazi.org/id/DF526670AB21FFE7FF63FF38544DFE8B" pageId="9" pageNumber="86" tableUuid="DF526670AB21FFE7FF63FF38544DFE8B">Table 2</tableCitation>
), including
<emphasis id="B959EAEAAB3BFFFDFDAFF8F15501F8BA" box="[584,602,1810,1835]" italics="true" pageId="9" pageNumber="86">T</emphasis>
.
<emphasis id="B959EAEAAB3BFFFDFD8FF8F155F5F8BD" box="[616,686,1810,1836]" italics="true" pageId="9" pageNumber="86">clypeus</emphasis>
n. gen., n. sp. in having only six pairs of pereopods with no trace of the seventh pair (pereopod 7 of two elongate segments in the sole species of
<taxonomicName id="4C2D4D7BAB3BFFFDFEAAF8925681F81A" authorityName="Shields &amp; Gomez-Gutierrez" authorityYear="1996" box="[333,474,1905,1931]" class="Malacostraca" family="Dajidae" genus="Oculophryxus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="86" phylum="Arthropoda" rank="genus">
<emphasis id="B959EAEAAB3BFFFDFEAAF8925681F81A" box="[333,474,1905,1931]" italics="true" pageId="9" pageNumber="86">Oculophryxus</emphasis>
</taxonomicName>
and of one or two stub-like segments in
<emphasis id="B959EAEAAB3BFFFDFEEDF8715647F83A" box="[266,284,1938,1963]" italics="true" pageId="9" pageNumber="86">T</emphasis>
.
<emphasis id="B959EAEAAB3BFFFDFECEF8725634F83A" box="[297,367,1937,1963]" italics="true" pageId="9" pageNumber="86">clypeus</emphasis>
n. gen., n. sp.). The male of
<taxonomicName id="4C2D4D7BAB3BFFFDFD43F871545CF83A" authority="Williams &amp; Boyko, 2021" authorityName="Williams &amp; Boyko" authorityYear="2021" box="[676,775,1937,1964]" class="Malacostraca" family="Dajidae" genus="Akrophryxus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="86" phylum="Arthropoda" rank="species" species="milvus" status="n. gen., n. sp.">
<emphasis id="B959EAEAAB3BFFFDFD43F87155EEF83D" box="[676,693,1938,1964]" italics="true" pageId="9" pageNumber="86">A</emphasis>
.
<emphasis id="B959EAEAAB3BFFFDFD24F872545CF83A" box="[707,775,1937,1963]" italics="true" pageId="9" pageNumber="86">milvus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26A5791AB3BFFFDFF63F851564AF85D" box="[132,273,1970,1996]" pageId="9" pageNumber="86" rank="species">n. gen., n. sp.</taxonomicNameLabel>
also differs from those in most genera in having the pleon fused with pereomere 7 (distinct from pereomere
<quantity id="4CD59B1DAB3BFFFDFD10F8315418FA7C" box="[759,835,1491,2028]" metricMagnitude="-1" metricUnit="m" metricValue="1.778" pageId="9" pageNumber="86" unit="in" value="7.0">7 in</quantity>
males in all other genera except
<taxonomicName id="4C2D4D7BAB3BFFFDFB42FA30543EF99C" authority="Richardson, 1905" authorityName="Richardson" authorityYear="1905" class="Malacostraca" family="Dajidae" genus="Holophryxus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="86" phylum="Arthropoda" rank="genus">
<emphasis id="B959EAEAAB3BFFFDFB42FA30527CFA7C" box="[1189,1319,1491,1517]" italics="true" pageId="9" pageNumber="86">Holophryxus</emphasis>
<bibRefCitation id="EFBC4B09AB3BFFFDFACAFA30543EF99C" author="Richardson" firstAuthor="Richardson" pageId="9" pageNumber="86" pagination="209 - 221" refId="ref17643" refString="RICHARDSON H. 1905. - Isopods from the Alaska Salmon Investigation. Bulletin of the Bureau of Fisheries 24: 209 - 221." type="journal article" year="1905">Richardson, 1905</bibRefCitation>
</taxonomicName>
and
<taxonomicName id="4C2D4D7BAB3BFFFDFC79FA105370F99C" authorityName="Shields &amp; Gomez-Gutierrez" authorityYear="1996" box="[926,1067,1523,1549]" class="Malacostraca" family="Dajidae" genus="Oculophryxus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="86" phylum="Arthropoda" rank="genus">
<emphasis id="B959EAEAAB3BFFFDFC79FA105370F99C" box="[926,1067,1523,1549]" italics="true" pageId="9" pageNumber="86">Oculophryxus</emphasis>
</taxonomicName>
), and from all other genera in having a reduced antennule and an antenna with a single large segment (males of other genera with antennules of at least one well-developed segment and all with antennae segmented and with distal flagella).
</paragraph>
<paragraph id="8B9236F8AB3BFFFEFCA4F97155FAF91C" blockId="9.[811,1457,1491,2028]" lastBlockId="10.[132,775,1491,1677]" lastPageId="10" lastPageNumber="87" pageId="9" pageNumber="86">
The female of
<taxonomicName id="4C2D4D7BAB3BFFFDFC3DF9715360F93D" authority="Williams &amp; Boyko, 2021" authorityName="Williams &amp; Boyko" authorityYear="2021" box="[986,1083,1682,1709]" class="Malacostraca" family="Dajidae" genus="Akrophryxus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="86" phylum="Arthropoda" rank="species" species="milvus" status="n. gen., n. sp.">
<emphasis id="B959EAEAAB3BFFFDFC3DF97154B1F93D" box="[986,1002,1682,1708]" italics="true" pageId="9" pageNumber="86">A</emphasis>
.
<emphasis id="B959EAEAAB3BFFFDFC1FF9715360F93D" box="[1016,1083,1682,1708]" italics="true" pageId="9" pageNumber="86">milvus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26A5791AB3BFFFDFBA5F970538AF93C" box="[1090,1233,1683,1709]" pageId="9" pageNumber="86" rank="species">n. gen., n. sp.</taxonomicNameLabel>
can be distinguished from that of
<emphasis id="B959EAEAAB3BFFFDFC48F950549BF95D" box="[943,960,1715,1740]" italics="true" pageId="9" pageNumber="86">T</emphasis>
.
<emphasis id="B959EAEAAB3BFFFDFC2BF951534AF95D" box="[972,1041,1714,1740]" italics="true" pageId="9" pageNumber="86">clypeus</emphasis>
n. gen., n. sp. in lacking antennules and in having three medial holes on the narrow, triangular attachment plate partially surrounding the host antennule with no additional lateral holes (
<emphasis id="B959EAEAAB3BFFFDFBCDF8F15360F8BA" box="[1066,1083,1810,1835]" italics="true" pageId="9" pageNumber="86">T</emphasis>
.
<emphasis id="B959EAEAAB3BFFFDFBAEF8F153D5F8BD" box="[1097,1166,1810,1836]" italics="true" pageId="9" pageNumber="86">clypeus</emphasis>
n. gen., n. sp. has flattened antennules and a broad, subquadrate attachment plate partially surrounding the host antennule and having two large medial holes, the largest with two additional small lateral holes). The male of
<taxonomicName id="4C2D4D7BAB3BFFFDFC98F8715485F83A" authority="Williams &amp; Boyko, 2021" authorityName="Williams &amp; Boyko" authorityYear="2021" box="[895,990,1937,1964]" class="Malacostraca" family="Dajidae" genus="Akrophryxus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="86" phylum="Arthropoda" rank="species" species="milvus" status="n. gen., n. sp.">
<emphasis id="B959EAEAAB3BFFFDFC98F87154D4F83D" box="[895,911,1938,1964]" italics="true" pageId="9" pageNumber="86">A</emphasis>
.
<emphasis id="B959EAEAAB3BFFFDFC7CF8725485F83A" box="[923,990,1937,1963]" italics="true" pageId="9" pageNumber="86">milvus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26A5791AB3BFFFDFC04F8715335F83D" box="[995,1134,1938,1964]" pageId="9" pageNumber="86" rank="species">n. gen., n. sp.</taxonomicNameLabel>
can be distinguished from that of
<emphasis id="B959EAEAAB3BFFFDFCA0F8515403F85A" box="[839,856,1970,1995]" italics="true" pageId="9" pageNumber="86">T</emphasis>
.
<emphasis id="B959EAEAAB3BFFFDFC83F85254F3F85A" box="[868,936,1969,1995]" italics="true" pageId="9" pageNumber="86">clypeus</emphasis>
n. gen., n. sp. in having only six pairs of pereopods (six fully-developed pairs plus a rudimentary seventh pair of one or two small segments in
<emphasis id="B959EAEAAB38FFFEFE77FA3756FAFA7C" box="[400,417,1492,1517]" italics="true" pageId="10" pageNumber="87">T</emphasis>
.
<emphasis id="B959EAEAAB38FFFEFE57FA3056AEFA7C" box="[432,501,1491,1517]" italics="true" pageId="10" pageNumber="87">clypeus</emphasis>
n. gen., n. sp.), a reduced antennule and a single segmented antenna (large ovate single segmented antennule and two segmented short antennae in
<emphasis id="B959EAEAAB38FFFEFF61F9D057CDF9DD" box="[134,150,1587,1612]" italics="true" pageId="10" pageNumber="87">T</emphasis>
.
<emphasis id="B959EAEAAB38FFFEFF42F9D157B1F9DD" box="[165,234,1586,1612]" italics="true" pageId="10" pageNumber="87">clypeus</emphasis>
n. gen., n. sp.), and the short and rounded pleon fused to pereomere 7 (pleon distinct from pereomere 7, elongate and tapered pleon in
<emphasis id="B959EAEAAB38FFFEFE70F99056F3F91D" box="[407,424,1651,1676]" italics="true" pageId="10" pageNumber="87">T</emphasis>
.
<emphasis id="B959EAEAAB38FFFEFE51F99156A0F91D" box="[438,507,1650,1676]" italics="true" pageId="10" pageNumber="87">clypeus</emphasis>
n. gen., n. sp.).
</paragraph>
</subSubSection>
</treatment>
</document>
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