Pseudostichopus spiculiferus ( O’Loughlin, 2002 ) O'Loughlin & Ahearn, 2005

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 : 176

publication ID

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

persistent identifier

https://treatment.plazi.org/id/116087F5-FFB5-FFFD-FF35-7E58FC8D1AF7

treatment provided by

Felipe

scientific name

Pseudostichopus spiculiferus ( O’Loughlin, 2002 )
status

comb. nov.

Pseudostichopus spiculiferus ( O’Loughlin, 2002) View in CoL comb. nov.

Figure 1g View Figure 1

Pseudostichopus sp. MoV 2068.— O’Loughlin et al., 1994: 253–255.

Meseres spiculiferus O’Loughlin, 2002: 309–312 View in CoL , figs 1a–f, 2a–d, tables 1–3.

Material examined. (See O’Loughlin, 2002). Antarctic Ocean , Weddell Sea, 1554 m, USNM 49279 About USNM (1) ; Antarctic Peninsula , 370–375 m , E48582 (1); 246–270 m, E49242 (2); 326 m, 49258 (2); 460–500 m, E49472 (4); Ross Sea , 73°58'– 78°23'S, 168°50’E – 161°57'W, 364–728 m GoogleMaps , E48598 (2); E48643 (2); E49268, E49269 (7); 1005124 (1); E49287 (2); E49354 (1); E49358 (2); 485–490 m, 1005121 (4); 1005123 (3); New Zealand, Antipodes Is , 2010–2100 m , 1005113 (1).

Description. Up to 105 mm long; body typically encrusted with sponge spicules, sometimes globigerines; body flat ventrally, convex dorsally; lateroventral margin subacute, some reticulate ridges with small digitate projections, lacking prominent ventrolateral projections; irregular double rows of tube feet dorsolaterally, larger along ventrolateral margin in band up to 5 irregular rows wide and continuous around anterior body, sometimes contiguous, up to 3.0 mm long, 0.8 mm diameter; ossicles in tentacles, tube feet and gonad; tentacle ossicles thick to thin, curved to straight irregular rods, frequently swollen mid-rod, rarely swollen terminally, rarely branched, rarely bluntly spinous, up to 320 Μm long; tube feet with rods distally, same form as tentacle rods, up to 200 Μm long; “endplates” of close cluster of irregular rods, up to 130 µm wide; gonad ossicles abundant smooth rods, tapered to points at ends, variable shape, frequently with central swelling, X- or Yshaped or complex multiple branching, branches sometimes joined to create large perforations, ossicles frequently 120 Μm long, up to 300 Μm long.

Colour. Body off-white or grey or grey-brown; tube feet off-white to reddish-brown.

Distribution. Eastern Antarctica, off Wilkes, MacRobertson, Enderby Lands, 177–695 m ( O’Loughlin, 2002); Ross Sea, 364–728 m; Antarctic Peninsula, 246–500 m; Weddell Sea, 1554 m; New Zealand, Antipodes Is, 2100 m.

Remarks. Meseres spiculiferus has the diagnostic characters of Pseudostichopus above, and is reassigned. The above data extend the distribution of O’Loughlin (2002) from eastern Antarctica to the Weddell Sea and New Zealand Antipodes Is, and depth to 2100 m. Amongst Pseudostichopus species, the distinguishing characteristics of P. spiculiferus are: dense cover of sponge spicules; absence of large pygal lobe ossicles; lateral band of tube feet; complex branching gonad ossicles.

Kingdom

Animalia

Phylum

Echinodermata

Class

Holothuroidea

Order

Persiculida

Family

Pseudostichopodidae

Genus

Pseudostichopus

Loc

Pseudostichopus spiculiferus ( O’Loughlin, 2002 )

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

Meseres spiculiferus O’Loughlin, 2002: 309–312

O'Loughlin, P. M. 2002: 312
2002
Loc

Pseudostichopus sp.

O'Loughlin, P. M. & Bardsley, T. M. & O'Hara, T. D. 1994: 253
1994
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