<documentid="D80FF7965F0DE940E274A49BC2632CB3"ID-CLB-Dataset="54097"ID-DOI="10.11646/megataxa.4.1.1"ID-GBIF-Dataset="7c9bc39d-9910-46f1-9558-c0647b9cbbdb"ID-ISSN="2703-3090"ID-Zenodo-Dep="4591138"IM.materialsCitations_approvedBy="felipe"IM.metadata_approvedBy="felipe"IM.tables_approvedBy="jonas"IM.taxonomicNames_approvedBy="jonas"IM.treatments_approvedBy="felipe"checkinTime="1614033145335"checkinUser="plazi"docAuthor="Kim, Il-Hoi & Boxshall, Geoff A."docDate="2020"docId="03C487CBEFCB3AA8FF4DFC75FA8CFBFA"docLanguage="en"docName="megataxa.4.1.1.pdf.imf"docOrigin="Megataxa 4 (1)"docSource="http://zoobank.org/3fdd970e-62f1-4f67-8cce-10870bdb3c01"docStyle="DocumentStyle:50B6B96D96A55C21793B52C23E95B310.5:Megataxa.2020-.journal_article"docStyleId="50B6B96D96A55C21793B52C23E95B310"docStyleName="Megataxa.2020-.journal_article"docStyleVersion="5"docTitle="Botachus cylindratus Thorell 1859"docType="treatment"docVersion="17"lastPageNumber="158"masterDocId="FFFDFFB3EF513A35FFC5FFCEFFC5FFC1"masterDocTitle="Untold diversity: the astonishing species richness of the Notodelphyidae (Copepoda: Cyclopoida), a family of symbiotic copepods associated with ascidians (Tunicata)"masterLastPageNumber="6"masterPageNumber="1"pageNumber="155"updateTime="1738783121566"updateUser="jonas">
<mods:titleid="7435ABD6A45BA9B135BB95C927ECB6C9">Untold diversity: the astonishing species richness of the Notodelphyidae (Copepoda: Cyclopoida), a family of symbiotic copepods associated with ascidians (Tunicata)</mods:title>
<bibRefCitationid="EFFC4B2CEFCB3AAFFE55FC75FDF3FC14"author="Thorell, T."box="[400,566,955,981]"journalOrPublisher="Kongliga Svenska vetenskapsakademiens handlingar"pageId="154"pageNumber="155"pagination="1 - 84"part="3"refId="ref331272"refString="Thorell, T. (1859) Bidrag til Kannedomen om Krustaceer som lefva i arter af Slagtet Ascidia L. Kongliga Svenska vetenskapsakademiens handlingar, 3 (8), 1 - 84. https: // doi. org / 10.5962 / bhl. title. 58671"title="Bidrag til Kannedomen om Krustaceer som lefva i arter af Slagtet Ascidia L"type="journal article"year="1859">Thorell, 1859</bibRefCitation>
<figureCitationid="13562A58EFCB3AAFFF55FC13FF39FC36"box="[144,252,989,1015]"captionStart="FIGURE 101"captionStartId="155.[136,245,1907,1933]"captionTargetBox="[245,1382,218,1842]"captionTargetId="figure-17@155.[202,1386,185,1870]"captionTargetPageId="155"captionText="FIGURE 101. Botachus cylindratus Thorell, 1859 female. A, habitus, right; B, caudal ramus, medial; C, leg 1; D, leg 2; E, exopod of leg 3; F, leg 4; G, leg 5. Scale bars: A, 0.2 mm; B-G, 002 mm."figureDoi="http://doi.org/10.5281/zenodo.4591446"httpUri="https://zenodo.org/record/4591446/files/figure.png"pageId="154"pageNumber="155">Figs. 101</figureCitation>
,
<figureCitationid="13562A58EFCB3AAFFECDFC13FEF6FC36"box="[264,307,989,1015]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="154"pageNumber="155">102</figureCitation>
<taxonomicNameid="4C6D4D5EEFCB3AAFFDD4FAB8FCC0FA51"authority=", Le Havre"authorityName="Le Havre"box="[529,773,1397,1424]"class="Ascidiacea"family="Ascidiidae"genus="Ascidia"kingdom="Animalia"order="Enterogona"pageId="154"pageNumber="155"phylum="Chordata"rank="species"species="mentula">
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<collectionCodeid="ED7CAE18EFCB3AAFFB59F904FB75F925"box="[1180,1200,1738,1764]"country="Canada"lsid="urn:lsid:biocol.org:col:13946"name="Royal British Columbia Museum - Herbarium"pageId="154"pageNumber="155"type="Museum">V</collectionCode>
<figureCitationid="13562A58EFCB3AAFFECCF8E1FEB8F88B"box="[265,381,1839,1866]"captionStart="FIGURE 101"captionStartId="155.[136,245,1907,1933]"captionTargetBox="[245,1382,218,1842]"captionTargetId="figure-17@155.[202,1386,185,1870]"captionTargetPageId="155"captionText="FIGURE 101. Botachus cylindratus Thorell, 1859 female. A, habitus, right; B, caudal ramus, medial; C, leg 1; D, leg 2; E, exopod of leg 3; F, leg 4; G, leg 5. Scale bars: A, 0.2 mm; B-G, 002 mm."figureDoi="http://doi.org/10.5281/zenodo.4591446"httpUri="https://zenodo.org/record/4591446/files/figure.png"pageId="154"pageNumber="155">Fig. 101A</figureCitation>
) slender, depressed, 1.51 mmlong. Prosome gradually broadening distally. Fourth pedigerous somite forming brood pouch, longer than anterior part of prosome; fifth pedigerous somite completely fused with fourth. Freeurosome cylindrical, 5-segmented, directed ventrally. Anal somite with spinulose, highly sclerotized ventrodistal protuberance. Caudalramus (
<figureCitationid="13562A58EFCB3AAFFD40F832FCC4F7D7"box="[645,769,2044,2070]"captionStart="FIGURE 101"captionStartId="155.[136,245,1907,1933]"captionTargetBox="[245,1382,218,1842]"captionTargetId="figure-17@155.[202,1386,185,1870]"captionTargetPageId="155"captionText="FIGURE 101. Botachus cylindratus Thorell, 1859 female. A, habitus, right; B, caudal ramus, medial; C, leg 1; D, leg 2; E, exopod of leg 3; F, leg 4; G, leg 5. Scale bars: A, 0.2 mm; B-G, 002 mm."figureDoi="http://doi.org/10.5281/zenodo.4591446"httpUri="https://zenodo.org/record/4591446/files/figure.png"pageId="154"pageNumber="155">Fig. 101B</figureCitation>
) about 2.4 timeslongerthan wide (59×25 μm), extended posteroventrally, armed with 2 claws and 4 naked setae and ornamented with several rows of minute spinules; 2 claws subequal in length and thickness, thicker claw 46 μm long and thin claw 43 μm long; posteroventral naked seta wrinkled, smallest seta inserted into basal part of thick claw.
Rostrum longerthan wide, narrowing distally towards rounded apical margin. Antennule, antenna, and mouthparts as described and illustrated by
<bibRefCitationid="EFFC4B2CEFCB3AAFFAC8FE11FCBDFDDD"author="Illg, P. L. & Dudley, P. L."journalOrPublisher="Pubblicazioni della Stazione Zoologica di Napoli"pageId="154"pageNumber="155"pagination="373 - 451"part="34"refId="ref329106"refString="Illg, P. L. & Dudley, P. L. (1965) Notodelphyid copepods from the vicinity of Naples. Pubblicazioni della Stazione Zoologica di Napoli, 34, 373 - 451."title="Notodelphyid copepods from the vicinity of Naples"type="journal article"year="1965">
<figureCitationid="13562A58EFCB3AAFFC77FDEDFBE3FDFC"box="[946,1062,547,573]"captionStart="FIGURE 101"captionStartId="155.[136,245,1907,1933]"captionTargetBox="[245,1382,218,1842]"captionTargetId="figure-17@155.[202,1386,185,1870]"captionTargetPageId="155"captionText="FIGURE 101. Botachus cylindratus Thorell, 1859 female. A, habitus, right; B, caudal ramus, medial; C, leg 1; D, leg 2; E, exopod of leg 3; F, leg 4; G, leg 5. Scale bars: A, 0.2 mm; B-G, 002 mm."figureDoi="http://doi.org/10.5281/zenodo.4591446"httpUri="https://zenodo.org/record/4591446/files/figure.png"pageId="154"pageNumber="155">Fig. 101C</figureCitation>
) with 3-segmented exopod and 2- segmented endopod; compound distal endopodal segment subdividedbyindistinct suture line. Innercoxalsetaabsent inlegs 1–4. Legs 2–4 (
<figureCitationid="13562A58EFCB3AAFFBFCFD47FB5DFD62"box="[1081,1176,649,675]"captionStart="FIGURE 101"captionStartId="155.[136,245,1907,1933]"captionTargetBox="[245,1382,218,1842]"captionTargetId="figure-17@155.[202,1386,185,1870]"captionTargetPageId="155"captionText="FIGURE 101. Botachus cylindratus Thorell, 1859 female. A, habitus, right; B, caudal ramus, medial; C, leg 1; D, leg 2; E, exopod of leg 3; F, leg 4; G, leg 5. Scale bars: A, 0.2 mm; B-G, 002 mm."figureDoi="http://doi.org/10.5281/zenodo.4591446"httpUri="https://zenodo.org/record/4591446/files/figure.png"pageId="154"pageNumber="155">Fig. 101</figureCitation>
D–F) with 3-segmented rami; first and second exopodal segments lacking inner seta; first and second endopodal segments also lacking inner setae; setae stiff, with short setules distally. Leg 4 lacking outer seta on basis. Armature formula for legs 1–4 as follows:
<figureCitationid="13562A58EFCB3AAFFC7FFB8DFBF6FB9C"box="[954,1075,1091,1117]"captionStart="FIGURE 101"captionStartId="155.[136,245,1907,1933]"captionTargetBox="[245,1382,218,1842]"captionTargetId="figure-17@155.[202,1386,185,1870]"captionTargetPageId="155"captionText="FIGURE 101. Botachus cylindratus Thorell, 1859 female. A, habitus, right; B, caudal ramus, medial; C, leg 1; D, leg 2; E, exopod of leg 3; F, leg 4; G, leg 5. Scale bars: A, 0.2 mm; B-G, 002 mm."figureDoi="http://doi.org/10.5281/zenodo.4591446"httpUri="https://zenodo.org/record/4591446/files/figure.png"pageId="154"pageNumber="155">Fig. 101G</figureCitation>
) small, consistingof digitiform protopod and rectangular free exopod; protopod tipped with long, naked seta; exopodal segment about 2.2 times longer than wide, also tipped with 1 naked seta (shorter than protopodal seta) and ornamented with spinules on inner margin.
<bibRefCitationid="EFFC4B2CEFCA3AAEFDE2F8BAFD7AF84F"author="Thorell, T."box="[551,703,1907,1934]"journalOrPublisher="Kongliga Svenska vetenskapsakademiens handlingar"pageId="155"pageNumber="156"pagination="1 - 84"part="3"refId="ref331272"refString="Thorell, T. (1859) Bidrag til Kannedomen om Krustaceer som lefva i arter af Slagtet Ascidia L. Kongliga Svenska vetenskapsakademiens handlingar, 3 (8), 1 - 84. https: // doi. org / 10.5962 / bhl. title. 58671"title="Bidrag til Kannedomen om Krustaceer som lefva i arter af Slagtet Ascidia L"type="journal article"year="1859">Thorell, 1859</bibRefCitation>
</taxonomicName>
female. A, habitus, right; B, caudal ramus, medial; C, leg 1; D, leg 2; E, exopod of leg 3; F, leg 4; G, leg 5. Scale bars: A, 0.2 mm; B-G, 002 mm.
<bibRefCitationid="EFFC4B2CEFCD3AA9FDECF8BAFD07F84F"author="Thorell, T."box="[553,706,1907,1934]"journalOrPublisher="Kongliga Svenska vetenskapsakademiens handlingar"pageId="156"pageNumber="157"pagination="1 - 84"part="3"refId="ref331272"refString="Thorell, T. (1859) Bidrag til Kannedomen om Krustaceer som lefva i arter af Slagtet Ascidia L. Kongliga Svenska vetenskapsakademiens handlingar, 3 (8), 1 - 84. https: // doi. org / 10.5962 / bhl. title. 58671"title="Bidrag til Kannedomen om Krustaceer som lefva i arter af Slagtet Ascidia L"type="journal article"year="1859">Thorell, 1859</bibRefCitation>
</taxonomicName>
male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm.
<thid="768C5DE3EFCCC5CAFF55FF24FE12FE4A"box="[144,471,234,395]"gridcol="0"gridrow="1"pageId="157"pageNumber="158">Locality leg 1 enp segs legs 2-4 enp segs Leg 2 & 3 setal elements on enp leg 4 setal elements on enp</th>
<bibRefCitationid="EFFC4B2CEFCC3AA8FDD2FE25FD8FFDE2"author="Illg, P. L. & Dudley, P. L."journalOrPublisher="Pubblicazioni della Stazione Zoologica di Napoli"pageId="157"pageNumber="158"pagination="373 - 451"part="34"refId="ref329106"refString="Illg, P. L. & Dudley, P. L. (1965) Notodelphyid copepods from the vicinity of Naples. Pubblicazioni della Stazione Zoologica di Napoli, 34, 373 - 451."title="Notodelphyid copepods from the vicinity of Naples"type="journal article"year="1965">Illg & Dudley, 1965</bibRefCitation>
<bibRefCitationid="EFFC4B2CEFCC3AA8FC85FE25FCB6FDE2"author="Illg, P. L. & Dudley, P. L."journalOrPublisher="Pubblicazioni della Stazione Zoologica di Napoli"pageId="157"pageNumber="158"pagination="373 - 451"part="34"refId="ref329106"refString="Illg, P. L. & Dudley, P. L. (1965) Notodelphyid copepods from the vicinity of Naples. Pubblicazioni della Stazione Zoologica di Napoli, 34, 373 - 451."title="Notodelphyid copepods from the vicinity of Naples"type="journal article"year="1965">Illg & Dudley, 1965</bibRefCitation>
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<figureCitationid="13562A58EFCC3AA8FF14FC75FE84FC14"box="[209,321,955,981]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig.102A</figureCitation>
) slender, 0.85mmlong.Prosomestrongly depressed. Urosome 6-segmented; fifth pedigerous somite free. First abdominal somite ornamented with 10 small tubercles on ventral surface (
<figureCitationid="13562A58EFCC3AA8FE00FBEFFDFDFBFA"box="[453,568,1057,1083]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig. 102B</figureCitation>
).Anal somite (
<figureCitationid="13562A58EFCC3AA8FD19FBEFFF2AFB9F"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig. 102C, D</figureCitation>
) short, without ventral protuberance. Caudal ramus (
<figureCitationid="13562A58EFCC3AA8FF1AFBABFEBCFB41"box="[223,377,1125,1152]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig. 102C, D</figureCitation>
) about 2.1 times longer than wide (34×16 μm), bearing tapering posteroventral process; armed with 2 claws and 4 setae; 2 claws almost equal in length, 40 and 39 μm, but unequal in thickness; setae naked, smallest seta inserted into basal part of thicker claw.
</paragraph>
<paragraphid="8BD236DDEFCC3AA8FF78FAFCFF19FAAC"blockId="157.[136,778,955,1764]"pageId="157"pageNumber="158">Rostrum, antennule, antenna, and mouthparts as in female.</paragraph>
<figureCitationid="13562A58EFCC3AA8FEDFFABBFE54FA4E"box="[282,401,1397,1423]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig. 102E</figureCitation>
) basis bearing inner distal seta and small, naked outer seta: endopod 3-segmented, but articulation indistinct between second and third segments. Leg 2 (
<figureCitationid="13562A58EFCC3AA8FF20FA15FE99FA37"box="[229,348,1499,1526]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig. 102F</figureCitation>
) exopod and endopod each bearing inner seta on first segment; third endopodal segment with 2 spines and 3 setae. Leg 3 (
<figureCitationid="13562A58EFCC3AA8FE39F9D1FDB5F9FB"box="[508,624,1567,1594]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig. 102G</figureCitation>
) exopod with inner seta on second segment; endopod armed as in leg 2. Leg 4 (
<figureCitationid="13562A58EFCC3AA8FF3AF9ADFEB2F9BF"box="[255,375,1635,1662]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig. 102H</figureCitation>
) lacking outer seta on basis, as in female; exopod as in leg 3; endopod with inner seta on first segment and 1 spine and 3 setae on third segment. Armature formula for legs 1–4 as follows:
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, 2
</td>
<tdid="768C5DE3EFCCC5CAFD8BF858FCC1F871"box="[590,772,1942,1968]"gridcol="4"gridrow="4"pageId="157"pageNumber="158">0-1; 0-0; 1, I, 2</td>
<figureCitationid="13562A58EFCC3AA8FEDCF814FE55F835"box="[281,400,2010,2036]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig. 102B</figureCitation>
) protopod short, notarticulated from ventral surface of somite, with naked seta on tip of short outer distal process; exopod rectangular, 10×6 μm, with rows of fine spinules distally; armed with 2 setae of equal length, inner seta feebly pinnate, outer seta naked. Leg 6 (
<figureCitationid="13562A58EFCC3AA8FCBEFD21FC2BFCC8"box="[891,1006,751,777]"captionStart="FIGURE 102"captionStartId="156.[136,245,1907,1933]"captionTargetBox="[238,1350,220,1839]"captionTargetId="figure-19@156.[202,1386,185,1870]"captionTargetPageId="156"captionText="FIGURE 102. Botachus cylindratus Thorell, 1859 male. A, habitus, right; B, proximal part of urosome showing legs 5 and 6, ventral; C, caudal ramus, dorsal; D, caudal ramus, right; E, leg 1; F, leg 2; G, leg 3; H, protopod and endopod of leg 4. Scale bars: A, 0.1 mm; B-H, 0.02 mm."figureDoi="http://doi.org/10.5281/zenodo.4591450"httpUri="https://zenodo.org/record/4591450/files/figure.png"pageId="157"pageNumber="158">Fig. 102B</figureCitation>
<bibRefCitationid="EFFC4B2CEFCC3AA8FACBFCFDFCB3FCB1"author="Illg, P. L. & Dudley, P. L."journalOrPublisher="Pubblicazioni della Stazione Zoologica di Napoli"pageId="157"pageNumber="158"pagination="373 - 451"part="34"refId="ref329106"refString="Illg, P. L. & Dudley, P. L. (1965) Notodelphyid copepods from the vicinity of Naples. Pubblicazioni della Stazione Zoologica di Napoli, 34, 373 - 451."title="Notodelphyid copepods from the vicinity of Naples"type="journal article"year="1965">
exhibits extreme variability in the segmentation and setation of the biramous swimming legs (see
<tableCitationid="C6EF0366EFCC3AA8FC9EFC57FC6EFC72"box="[859,939,921,947]"captionStart="TABLE 1"captionStartId="157.[137,229,159,183]"captionTargetPageId="157"captionText="TABLE 1. Variation in leg segmentation and armature in female Botachus cylindratus."pageId="157"pageNumber="158">Table 1</tableCitation>
). The nature of this variability requires further morphological study and analysis of a sufficient number of samples from different hosts and localities in order to determine whether there is any discernible pattern related to either host usage or geographical distribution.
