Pseudostichopus aemulatus Solís-Marín and Billett, 2004

O'Loughlin, P. Mark & Ahearn, Cynthia, 2005, A review of pygal-furrowed Synallactidae (Echinodermata: Holothuroidea), with new species from the Antarctic, Atlantic and Pacific oceans, Memoirs of Museum Victoria 62 (2), pp. 147-179 : 169-170

publication ID

https://doi.org/ 10.24199/j.mmv.2005.62.5

persistent identifier

https://treatment.plazi.org/id/116087F5-FFBE-FFF7-FC91-7EC9FF2F1BEE

treatment provided by

Felipe

scientific name

Pseudostichopus aemulatus Solís-Marín and Billett, 2004
status

 

Pseudostichopus aemulatus Solís-Marín and Billett, 2004 View in CoL

Figures 11a, b View Figure 11 , 12m View Figure 12

Pseudostichopus sp. — Billett, 1988: 196–197.—Billet et al., 2001: 325–348.

Pseudostichopus aemulatus Solís-Marín and Billett (in Solís-Marín et al.), 2004: 1079–1084, figs 1, 2, tables 5, 6. Material examined. Paratypes. Northeast Atlantic Ocean, Porcupine Abyssal Plain, 48°45'– 48°48'N, 16°36'– 16°41'W, 4835–4838 m, RRS Discovery, stn 54901#5, 28 Apr 1999, USNM 1025525 About USNM (3).

Description. Up to 146 mm long; body wall thick, gelatinous, opaque, sometimes encrusted with foraminiferans and sand; distinct brim, flat ventrally, convex dorsally; body surface smooth, lacking close wrinkling with ridges and digitate projections; tapering papillae in double irregular series on dorsolateral radii, series not widely separated, papillae typically up to 1.5 mm long, 1.0 mm diameter at base; papillae in widely separated double series ventrolaterally, dorsal to or ventral to or on brim; ossicles in tentacles and gonad; tentacle ossicles abundant, tapering rods, thick to thin, finely to bluntly spinous or smooth, with or lacking mid-rod swelling, rarely with short branches, up to 260 µm long; gonad ossicles predominantly small, thin, pointed, unbranched rods with mid-rod swelling, some with sparse blunt spines, rods up to 140 µm long.

Colour. Body off-white.

Distribution. NE Atlantic Ocean, Porcupine Abyssal Plain, 4350–4850 m ( Solís-Marín et al., 2004).

Remarks. P. aemulatus is similar to P. peripatus (below), but is distinguished by: body wall off-white (not greyish), opaque (not semi-translucent), smooth (lacking ridges with digitate projections); dorsolateral double series of papillae not widely separated; ventrolateral double series of papillae widely separated; papillae lack ossicles; gonad ossicles predominantly unbranched pointed rods with mid-rod swelling. These characters also distinguish P. aemulatus from other Pseudostichopus species.

Kingdom

Animalia

Phylum

Echinodermata

Class

Holothuroidea

Order

Persiculida

Family

Pseudostichopodidae

Genus

Pseudostichopus

Loc

Pseudostichopus aemulatus Solís-Marín and Billett, 2004

O'Loughlin, P. Mark & Ahearn, Cynthia 2005
2005
Loc

Pseudostichopus sp.

Billett, D. S. M. 1988: 196
1988
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