Phyllodelphys capensis, 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.6422170 |
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persistent identifier |
https://treatment.plazi.org/id/03C487CB-ED21-3847-FF4D-FA33FC5FF900 |
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treatment provided by |
Plazi |
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scientific name |
Phyllodelphys capensis |
| status |
gen. et sp. nov. |
Phyllodelphys capensis gen. et sp. nov.
( Figs. 423 View FIGURE 423 , 424 View FIGURE 424 )
Typematerial. Holotype (intact ♀, MNHN-IU-2014- 21446 ) , paratypes (4 intact ♀♀, MNHN-IU-2014- 21447), and dissected paratypes (2 ♀♀, figured) from Trididemnum sp., southwest of Cape Town, South Africa, intertidal, Monniot coll., 05 February 1996.
Etymology. Thetype locality, Cape Town, provides the specific name of the new species.
Description of female. Body ( Fig. 423 View FIGURE 423 A-C) vermiform; body length 4.70-5.09 mm; body length of dissected specimen ( Fig. 423B View FIGURE 423 ) 4.72 mm. Body width variable, narrow in non-ovigerous young adult ( Fig. 423A View FIGURE 423 ), 1.19 mm in dissected ovigerous specimen ( Fig. 423B View FIGURE 423 ), and muchwider, 1.80 mm, infemalewithexpanded brood pouch containing nauplii. Prosome divisible by constrictionintocephalosomeandmetasome:cephalosome ( Fig. 423D, E View FIGURE 423 ) much narrower than metasome. Metasome divisible into short, narrower anterior part (possibly repesenting first pedigerous somite) and longer, broader remaining part. Metasome of expanded specimen ( Fig. 423C View FIGURE 423 ) with 2 constrictions. Freeurosome ( Fig. 423F View FIGURE 423 ) small, graduallynarrowing posteriorly; consistingof short genital somite bearing copulatory pore on ventral surface and unsegmented abdomen, wider than long (260×320 μ). Caudal rami ( Fig. 423 View FIGURE 423 G-I) vestigial, bearing 5 minute setae of variable size.
Rostrum ( Fig. 423D View FIGURE 423 ) broadened distally. Antennule ( Fig. 423J View FIGURE 423 ) lobate, aslongas wide, unsegmented, with indentation subdistally on dorsal margin, apparently unarmed, but ornamented with many short, thick setules on distal region. Antenna ( Fig. 423K View FIGURE 423 ) 3-segmented, consistingof unarmed coxa and basis and unsegmented endopod; endopod distinctly narrower than proximal segments, about 3.1 timeslongerthan wide (80×26 μm), with minute spinules on margins: armed with 7 small setae (1 subdistal and 6 distal) plus short terminal claw, one-thirdaslongas endopod, almost straight.
Mouthparts positioned deep inside pre-oral cavity formed by anterior and posterior folds on ventral side of cephalosome ( Fig. 423D View FIGURE 423 ). Labrum ( Fig. 424A View FIGURE 424 ) smooth, unornamented, with broadly convex posterior margin. Mandible ( Fig. 424B, C View FIGURE 424 ) consisting coxa and biramous palp: coxa ( Fig. 424C View FIGURE 424 ) with broad gnathobase bearing 1 acutely pointed and 3 blunt teeth along distal third of medial margin and with remaining part of medial margin pectinate (spinulose); palp ( Fig. 424B View FIGURE 424 ) consistingof basis, 2-segmented exopod, and unsegmented endopod; basis with 1 setaat mediodistal corner; exopod small, armed with 2 setae on each segment; endopod much larger than exopod, armed with 5 setae; setae on palp broad, but feebly pinnate. Maxillule ( Fig. 424D View FIGURE 424 ) unsegmented, lobate, bearing 9 broad setae: 2 setae on medial margin, 4 leaf-like setae on distal margin, and 3 setaeon outer margin. Maxilla ( Fig. 424E View FIGURE 424 ) 2-segmented; first segment (syncoxa) bearing 2 setae medially; secondsegment (basis + endopod) bearing 4 setae (1 largeand 3 small) medially and bilobed distal part; each distal lobe tipped with 1 small spinule. Maxilliped ( Fig. 424F View FIGURE 424 ) lobate, bearing 4 leaf-like setae of different sizes, 2 larger distal and 2 smaller subdistal setae.
Legs absent.
Male. Unknown.
Remarks.Thefunctionalsignificanceoftheflattened, leaf-like setae found on the maxillule and maxilliped is unknown.
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.