Thyone hirta Cherbonnier, 1970

Thandar, Ahmed S., 2008, Additions to the holothuroid fauna of the southern African temperate faunistic provinces, with descriptions of new species, Zootaxa 1697 (1), pp. 1-57 : 6-7

publication ID

https://doi.org/ 10.11646/zootaxa.1697.1.1

DOI

https://doi.org/10.5281/zenodo.5107089

persistent identifier

https://treatment.plazi.org/id/DE2087C7-F525-8740-A0AD-F4F3906C5FC2

treatment provided by

Felipe

scientific name

Thyone hirta Cherbonnier, 1970
status

 

Thyone hirta Cherbonnier, 1970

Figure 2 View FIGURE 2

Thyone hirta Cherbonnier, 1970: 288 , fig 4 N-S, fig 5 A-B; Thandar, 1990: 214.

Type MNHNP, EcHh 1489 .

Type locality False Bay , WCP, 48 m.

Material examined

SAM-A27976, UCT Ecol. Surv. , False Bay, SAM-A27977, St. FAL 493 , 34 o 14' S, 18 o 30' E, 27.x. 1961, 42 m, 1 spec GoogleMaps ; SAM-A27978, St. FAL 368 , 34 o 12.6' S, 18 o 46.7' E, 25.ii. 1959, 40 m, 1 spec GoogleMaps ; SAM-A27979, St. FAL 328 , 34 o 19' S, 18 o 34.6' E, 31.i. 1959, 40 m, 2 spec. GoogleMaps

Distribution Known only from False Bay, WCP, 40- 53 m.

Remarks

This species, well characterized by its multilocular, oval table discs ( Figure 2A View FIGURE 2 ), stout podial tables ( Figure 2C View FIGURE 2 ) and a delicate calcareous ring with the interradial plates composed of a single series of large fragments (see Cherbonnier, 1970), was based on six specimens from False Bay. Thandar (1990) and subsequently at the MNHNP, examined some paratypes of this species and determined that at least three (EcHh 1489) are misidentified and clearly referable to Thyonina articulata . The remaining two (EcHh 1490 & 1491) definitely represent T. hirta .

The two current specimens, also from False Bay, correspond well with the type. They are white in alcohol, measure 10 mm and 15 mm, and were previously examined by Natasen Moodley (2000). She, however, overlooked the calcareous ring which, although lost in the larger specimen, is extant in her dissected smaller specimen. The body wall table discs measure 98-125 µm, the podial table discs 107-134 µm and the end-plates ( Figure 2D View FIGURE 2 ) average 134 µm. The introvert (not examined by Cherbonnier 1970) is supported by tables, similar but smaller than those of the body wall, as well as by perforated plates and rods ( Figure 2F View FIGURE 2 ). The tentacles possess smooth, perforated plates and rods of a variety of shapes and sizes, up to 222 µm ( Figure 2E View FIGURE 2 ). Rosettes are absent from both the tentacles and the introvert. The writer examined a single specimen in the SAM, also from False Bay taken at 80 m, identified as T. hirta by Ahearn (unpublished record). This specimen showed rosettes in both the tentacles and the introvert, and is hence not referable to this species. Thandar (1990) remarked on the similarity of the body wall spicules of T. hirta with those of T. avenusta Cherbonnier, 1970 but concluded that the two species are not conspecific.

MNHNP

Museo Nacional de Historia Natural del Paraguay

Kingdom

Animalia

Phylum

Echinodermata

Class

Holothuroidea

Order

Dendrochirotida

Family

Phyllophoridae

Genus

Thyone

Loc

Thyone hirta Cherbonnier, 1970

Thandar, Ahmed S. 2008
2008
Loc

Thyone hirta

Thandar, A. S. 1990: 214
Cherbonnier, G. 1970: 288
1970