Tubipedia anisocladia, Kim & Boxshall, 2020
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publication ID |
https://doi.org/ 10.11646/megataxa.4.1.1 |
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DOI |
https://doi.org/10.5281/zenodo.6422156 |
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persistent identifier |
https://treatment.plazi.org/id/03C487CB-ED12-3870-FCEF-FF62FEE7F9BC |
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treatment provided by |
Plazi |
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scientific name |
Tubipedia anisocladia |
| status |
gen. et sp. nov. |
Tubipedia anisocladia gen. et sp. nov.
( Figs. 389 View FIGURE 389 , 390 View FIGURE 390 )
Type material. Holotype ♀ (dissected and mounted on a slide, MNHN-IU-2014-21424 ) from an unknown host, AURACEA 1995 Stn P15, near the lighthouse , Ibo Island, Mozambique, depth 0-20 m, Monniot coll., 14 November 1995.
Etymology. The name of the new species is derived from the Greek anis (=unequal) and clad (=a branch), alluding to the extremely unequal sizes of the exopods and endopods of swimming legs.
Descriptionoffemale. Body ( Fig. 389A View FIGURE 389 ) elongate, length 2.03 mm. Prosome curved dorsally, dorsoventrally depressed, gradually broadening posteriorly in dorsal and ventral view, unsegmented, but with several transverse wrinkles present dorsally. Cephalosome ( Fig. 389C View FIGURE 389 ) small, free margins rounded in dorsal view. Legs 1 and 2 positionedanteriorly on metasome ( Fig. 389D View FIGURE 389 ). Leg 3 positioned distant from leg 2, and leg 4 widely separated from leg 3 ( Fig. 389A View FIGURE 389 ). Fused third and fourth pedigerous somites forming brood pouch. Free urosome ( Fig. 389B View FIGURE 389 ) small, occupying 20% ofbodylength, 5-segmented, distinctly narrowing posteriorly. Genital somite short but broadest. Caudalramus ( Fig. 389E View FIGURE 389 ) 1.5 timeslongerthan wide (60×40 μm), rounded distally; armedwith 5 small setae (1 lateral and 4 distal).
Rostrum ( Fig. 389F View FIGURE 389 ) small, longerthanwide, with nearly parallel lateral margins and rounded distal margin. Antennule ( Fig. 389G View FIGURE 389 ) small, 77 μmlong, 5-segmented; second segment subdivided by incomplete suture on one surface; armatureformula 2, 16, 3, 1, and 11+aesthetasc; allsetae naked.Antenna ( Fig. 389H View FIGURE 389 )slender, 4-segmented, consistingof coxa, basis, and 2-segmented endopod; coxa and basis unarmed; first endopodal segment longer than basis and armed with 1 seta on inner margin; distal endopodal segment slightly longer than first, 3.4 times longerthanwide (27×8 μm); armedwith 4 setae (2 minute setae at middle of inner margin, 1 subdistal, and 1 distal) plus slender terminal claw, 0.6 times as long as segment.
Labrum missing. Mandible ( Fig. 389I View FIGURE 389 ) coxa with 4 teeth on medial margin of gnathobase, proximal 2 blunt and positioned close to each other: palp consisting of basis, exopod and 2-segmented endopod; basis lacking seta; exopodwith 4 setae (proximalmost slightlylonger than other 3); endopod incompletely articulated from basis and incompletely 2-segmented with 4 setaeon first segment and 6 setae on second; medial margin of first endopodal segment projecting. Maxillule ( Fig. 389J View FIGURE 389 ) bilobed; medial lobe (precoxal arthrite) with 1 naked and 4 plumose setae; outer lobe (palp) broader with 6 naked setae. Maxilla ( Fig. 389K View FIGURE 389 ) short, broad, indistinctly 5- segmented; armedwith 3, 2, 1, 1, and 2 setaeonfirst to fifth segments, respectively. Maxilliped ( Fig. 389L View FIGURE 389 ) lobate, bearing 7 naked setae and 1 broad, pinnate seta.
Legs 1–4 biramous ( Fig. 390 View FIGURE 390 A-C), with endopods markedly smaller than exopods; protopod of leg 1 incompletely 2-segmented, but those of legs 2–4 unsegmented; first exopodal segment of all legs inflated. Leg 1 with large outer seta on basis; both rami 2- segmented. Legs 2–4 with 3-segmented exopods and 1- segmented endopods. Third exopodal segment of legs 2–4 tipped with small tube at tip. Leg 3 not differing from leg 2. Armature formula for legs 1–4 as follows:
| Protopod | Exopod | Endopod | |
|---|---|---|---|
| Leg 1 | 1-0 | 1-0; 1, I, 3 | 0-0; 2 |
| Legs 2 & 3 0-0 | 1-0; 0-0; 0 | 2 | |
| Leg 4 | 0-0 | 0-0; 0-0; 0 | 1 |
Leg 5 ( Fig. 389B View FIGURE 389 ) represented by 2 small setae at posteroventral corners of prosome. Leg 6 absent.
Male. Unknown.
Remarks. Tubipedia anisocladia gen. et sp. nov. was collected together with Procampodelphys nodosus gen. et sp. nov. (see below) from the same host at the same locality.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.