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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.92.1036" ID-GBIF-Dataset="aecfb175-bb86-42cb-b4c3-76cc6eb444d5" ID-PMC="PMC3084542" ID-Pensoft-Pub="1313-2970-92-1" ID-PubMed="21594109" ModsDocAuthor="" ModsDocDate="2011" ModsDocID="1313-2970-92-1" ModsDocOrigin="ZooKeys 92" ModsDocTitle="A new species of Leucothoid Amphipod, Anamixis bananarama, sp. n., from Shallow Coral Reefs in French Polynesia (Crustacea, Amphipoda, Leucothoidae)" checkinTime="1451250475650" checkinUser="pensoft" docAuthor="James Darwin, Thomas &amp; Krapp-Schickel, Traudl" docDate="2011" docId="C1DF94AD7DC6AD69E63DA6622384AE31" docLanguage="en" docName="ZooKeys 92: 1-8" docOrigin="ZooKeys 92" docSource="http://dx.doi.org/10.3897/zookeys.92.1036" docTitle="Anamixis bananarama Darwin &amp; Krapp-Schickel, 2011, sp. n." docType="treatment" docVersion="4" lastPageNumber="7" masterDocId="FFAFFFAFFF95FFD4FFDEFFDA0E62FFBA" masterDocTitle="A new species of Leucothoid Amphipod, Anamixis bananarama, sp. n., from Shallow Coral Reefs in French Polynesia (Crustacea, Amphipoda, Leucothoidae)" masterLastPageNumber="8" masterPageNumber="1" pageNumber="3" updateTime="1668168645150" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>A new species of Leucothoid Amphipod, Anamixis bananarama, sp. n., from Shallow Coral Reefs in French Polynesia (Crustacea, Amphipoda, Leucothoidae)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>James Darwin, Thomas</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Krapp-Schickel, Traudl</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2011</mods:date>
<mods:detail type="volume">
<mods:number>92</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>8</mods:end>
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<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.92.1036</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.92.1036</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-92-1</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="159364936" LSID="urn:lsid:plazi:treatment:C1DF94AD7DC6AD69E63DA6622384AE31" httpUri="http://treatment.plazi.org/id/C1DF94AD7DC6AD69E63DA6622384AE31" lastPageId="6" lastPageNumber="7" pageId="2" pageNumber="3">
<subSubSection pageId="2" pageNumber="3" type="nomenclature">
<paragraph pageId="2" pageNumber="3">
<taxonomicName LSID="urn:lsid:zoobank.org:act:C57C627F-D2F5-48CD-94C9-5868B6144F96" class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
<taxonomicNameLabel pageId="2" pageNumber="3">sp. n.</taxonomicNameLabel>
Figures 13
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="3" type="type material">
<paragraph pageId="2" pageNumber="3">Type material.</paragraph>
<paragraph pageId="2" pageNumber="3">
Holotype, Anamorph male
<normalizedToken originalValue="“A”">&quot;A&quot;</normalizedToken>
, 2.34mm, UF 26542, Paratype, leucomorph female
<normalizedToken originalValue="“B”">&quot;B&quot;</normalizedToken>
, 2.10mm; UF 26543;
<normalizedToken originalValue="Cooks">Cook's</normalizedToken>
Bay, Moorea, French Polynesia, J.D. Thomas collector, 4 December 2009, JDT Moorea 09-4 (South-17.48220:West-149.82530). Wash of backreef rubble, 1-2m.
<taxonomicName genus="Additional" lsidName="Additional paratypes" pageId="2" pageNumber="3" rank="species" species="paratypes">Additional paratypes</taxonomicName>
, female leucomorphs (7 specimens), UF 26544,
<normalizedToken originalValue="Cooks">Cook's</normalizedToken>
Bay, Moorea, French Polynesia, J.D. Thomas collector, 11 December 2009, JDT-Moorea 09-10 (South 17.59205:West-149.835211) coral rubble, coralgal sand, and coral heads, 2-3m.
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="3" type="additional material">
<paragraph pageId="2" pageNumber="3">Additional material.</paragraph>
<paragraph pageId="2" pageNumber="3">Hans-Georg Mueller collector; 27 February to 6 March 1988, shallow reef, Bora Bora.</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="3" type="diagnosis">
<paragraph pageId="2" pageNumber="3">Diagnosis.</paragraph>
<paragraph pageId="2" pageNumber="3">Terminal anamorph males: Eyes with 7 scattered ommatidia; gnathopod 1 greatly reduced, shriveled, persisting in post-transformational stages. Gnathopod 2, basis greatly elongated, narrow; carpus elongate, apically blunt, with reduced setal tufts on medial margin; propodus with sparse mediofacial setal row. Telson elongate for genus, 1.72 times longer than wide.</paragraph>
</subSubSection>
<subSubSection lastPageId="5" lastPageNumber="6" pageId="2" pageNumber="3" type="description">
<paragraph pageId="2" pageNumber="3">Description.</paragraph>
<paragraph pageId="2" pageNumber="3">Head margin broadly rounded, lacking any defining processes; ventral keel, anterior margin rounded, with small midapical indentation; eyes reduced, consisting of 7 scattered ommatidial facets. Antenna 1, ratio of segments 1-3, 43:33:28, peduncle segment 1 and 2 with 3 and 2 plumose setae respectively; flagellum 6-articulate, articles 3-6 with aesthetascs. Antenna 2, flagellum short, 4-articulate. Maxilliped, inner plates fused, apically produced, apical margin with small concave excavation; outer plates lacking inner lobes; palp article 4, 1.36 times length of article 3. Pereonite 1 with small lateral locking ridge.</paragraph>
<paragraph pageId="2" pageNumber="3">Gnathopod 1, coxa greatly reduced, apically bifid; remainder of appendage a small bud, articles 2-5 extremely reduced and shriveled. Gnathopod 2, coxa extending deeper than coxa 3-4, distal margin evenly rounded, bearing 10 mediodistal submarginal setules; basis thin, elongate; carpus slightly curved, blunt, reaching 85 percent of propodus, with 6 medial clusters of setae: 2:(2+3):(3+3):(4+1):3:1, distal margin with 5 small submarginal setules; propodus with single row of 7 mediofacial feeding setae, extending 43 percent of propodus length, posterior margin smooth with 3 submarginal setae, anterior margin with 2 prominent apically truncate processes; dactyl straight, inner surface smooth with paired setae on small process near apex, reaching 83 percent on propodus.</paragraph>
<paragraph lastPageId="4" lastPageNumber="5" pageId="3" pageNumber="4">
<pageBreakToken pageId="3" pageNumber="4" start="start">Pereopod</pageBreakToken>
3, coxa smaller than 4, rounded ventrally, anterior and posterior margins straight; remainder of pereopods unremarkable. Pereopod 4, coxa slightly larger than 3, posterior margin slightly expanded, remainder of peropod similar to pereopod 3. Pereopods 5-6, coxae bilobed; pereopod 7, coxa entire. Epimera normal for genus. Uropods 1-2, outer rami shortened, approximately 40 percent of inner ramus. Uropod
<pageBreakToken pageId="4" pageNumber="5" start="start">3</pageBreakToken>
, outer ramus 40 percent of inner ramus, outer and inner rami with 1 and 2 marginal spines respectively. Telson 1.70 times longer than wide, with 2 apical setae.
</paragraph>
<paragraph lastPageId="5" lastPageNumber="6" pageId="4" pageNumber="5">
Leucomorph. Description of female leucomorph. Head, anterior margin rounded, smooth, eyes consisting of 7 scattered ommatidial facets. Antenna 1, ratio of segments 1-3, 33:26:23; flagellum 5-articulate, articles 4 and 5 with aesthetascs. Antenna
<pageBreakToken pageId="5" pageNumber="6" start="start">2</pageBreakToken>
, flagellum short, 5-articulate. Gnathopod 1, coxa moderately reduced, extending to ventral margin of head, apically bifid; carpus shorter than propodus, with two apical recurved spines, anterior margin bare; propodus, posterior margin finely serrate, bearing a thick recurved apical seta. Gnathopod 2, anterior margin of coxa broadly rounded, ventral margin slightly produced, posteroventral corner with small cusp, posterior margin straight; propodus, palm angle transverse, palmar margin defined by series of concavities and processes, corner of palm defined by distinct cusp; dactyl reaching to end of palm. Telson 1.72 times longer than wide, with 2 apical setae.
</paragraph>
<caption pageId="5" pageNumber="6">
<paragraph pageId="5" pageNumber="6">
Figure 1.
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
sp. n., holotype, anamorph male male
<normalizedToken originalValue="”A”">&quot;A&quot;</normalizedToken>
, 2.34 mm.
</paragraph>
</caption>
<caption pageId="5" pageNumber="6">
<paragraph pageId="5" pageNumber="6">
Figure 2.
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
sp. n., paratype, leucomorph female
<normalizedToken originalValue="“B”">&quot;B&quot;</normalizedToken>
, 2.10mm.
</paragraph>
</caption>
<caption pageId="5" pageNumber="6">
<paragraph pageId="5" pageNumber="6">
Figure 3. AutoMontage Z-stacked photograph of
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
sp. n., holotype, anamorph male male
<normalizedToken originalValue="”A”">&quot;A&quot;</normalizedToken>
, 2.34 mm.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="5" pageNumber="6" type="etymology">
<paragraph pageId="5" pageNumber="6">Etymology.</paragraph>
<paragraph pageId="5" pageNumber="6">This species is named for the long recurved carpal lobe on the second gnathopod that resembles the shape of a banana.</paragraph>
</subSubSection>
<subSubSection lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6" type="relationships">
<paragraph pageId="5" pageNumber="6">Relationships.</paragraph>
<paragraph lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6">
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
shares it closest affinity with
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis jebbi" order="Amphipoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="jebbi">Anamixis jebbi</taxonomicName>
from the Madang Lagoon, Papua New Guinea, (Thomas, 1997), with both species having 7 ommatidial facets in both leucomorph and anamorph stages, and a reduced, vestigial first gnathopod in the post transformational anamorph stage. The second gnathopod of
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
differs from
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis jebbi" order="Amphipoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="jebbi">Anamixis jebbi</taxonomicName>
in the elongate basis, the more blunt and less
<pageBreakToken pageId="6" pageNumber="7" start="start">setose</pageBreakToken>
carpus, and reduced mediofacial setal row (7 in
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
; 14 in
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis jebbi" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="jebbi">Anamixis jebbi</taxonomicName>
).
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
exhibits an elongated telson typical of ratios found in
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Nepanamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nepanamixis" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="genus">Nepanamixis</taxonomicName>
(Thomas, 1997). Both
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis jebbi" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="jebbi">Anamixis jebbi</taxonomicName>
and
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
show transitional characters placing them in a clade by themselves with the elongate telson of
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
placing it nearer to
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Nepanamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nepanamixis" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="genus">Nepanamixis</taxonomicName>
in this regard. The telson of
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
at 1.70 times longer than wide exceeds that of
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis jebbi" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="jebbi">Anamixis jebbi</taxonomicName>
at 1.32 and approaches the telson ratios typical of the genus
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Nepanamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nepanamixis" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="genus">Nepanamixis</taxonomicName>
at 1.8-2.0 times longer than wide.
</paragraph>
</subSubSection>
<subSubSection pageId="6" pageNumber="7" type="remarks">
<paragraph pageId="6" pageNumber="7">Remarks.</paragraph>
<paragraph pageId="6" pageNumber="7">Color in life and in freshly collected and preserved material of both leucomorph and anamorph stages are pale translucent pink. There is faint thin reddish banding on posterior thoracic and abdominal segments. Eyes are red. Ovigerous females contain an average of 7-10 yellow eggs in the marsupium.</paragraph>
<paragraph pageId="6" pageNumber="7">
The vestigial first gnathopods found in
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis bananarama" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="bananarama">Anamixis bananarama</taxonomicName>
and
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Anamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anamixis jebbi" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="jebbi">Anamixis jebbi</taxonomicName>
are persistent morphologies in post transformational anamorphs in both taxa. A number of specimens were examined by the first author to ensure these were not transitional transformational features as reported by
<bibRefCitation author="Thomas, JD" journalOrPublisher="Records of the Australian Museum" pageId="7" pageNumber="8" pagination="35 - 98" title="Systematics and Phylogeny of the commensal amphipod family Anamixidae (Crustacea: Amphipoda)." volume="49" year="1997">Thomas (1997)</bibRefCitation>
in
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Paranamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Paranamixis clarkae" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="clarkae">Paranamixis clarkae</taxonomicName>
from the Seychelles Islands. In
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Paranamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Paranamixis clarkae" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="clarkae">Paranamixis clarkae</taxonomicName>
, transformational anamorphs exhibit small shrunken vestiges of gnathopod 1 which are lost in subsequent molts.
<bibRefCitation author="Ren, D" journalOrPublisher="Science Press, Bejing" pageId="7" pageNumber="8" title="Fauna Sinica, Invertebrata, volume 41, Crustacea, Amphipoda, Gammaridea (i)." year="2006">Ren (2006)</bibRefCitation>
described
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Paranamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Paranamixis vestigium" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="vestigium">Paranamixis vestigium</taxonomicName>
from the South China Sea, illustrating similar reduced first gnathopods. In all other aspects
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Paranamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Paranamixis vestigium" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="vestigium">Paranamixis vestigium</taxonomicName>
resembles
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Paranamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Paranamixis misakiensis" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="misakiensis">Paranamixis misakiensis</taxonomicName>
described by
<bibRefCitation author="Thomas, JD" journalOrPublisher="Records of the Australian Museum" pageId="7" pageNumber="8" pagination="35 - 98" title="Systematics and Phylogeny of the commensal amphipod family Anamixidae (Crustacea: Amphipoda)." volume="49" year="1997">Thomas (1997)</bibRefCitation>
from Japan and examination of a series of anamorph specimens of
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Paranamixis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Paranamixis vestigium" order="Amphipoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="vestigium">Paranamixis vestigium</taxonomicName>
is needed to resolve whether these vestigial first gnathopods persist in post-transformational molts.
</paragraph>
</subSubSection>
<subSubSection pageId="6" pageNumber="7" type="habitat">
<paragraph pageId="6" pageNumber="7">Habitat.</paragraph>
<paragraph pageId="6" pageNumber="7">Specific habitat/host undocumented but assumed to be small asconoid calcareous sponges in protected rubble habitats in backreef environments.</paragraph>
</subSubSection>
<subSubSection pageId="6" pageNumber="7" type="distribution">
<paragraph pageId="6" pageNumber="7">Distribution.</paragraph>
<paragraph pageId="6" pageNumber="7">Moorea and Bora Bora, French Polynesia, Pacific Ocean. 1-3m.</paragraph>
</subSubSection>
</treatment>
</document>