Myriotrochus hesperides O’Loughlin and Manjón-Cabeza, 2009

O’Loughlin, P. Mark & VandenSpiegel, Didier, 2010, A revision of Antarctic and some Indo-Pacific apodid sea cucumbers (Echinodermata: Holothuroidea: Apodida), Memoirs of Museum Victoria 67, pp. 61-95 : 68

publication ID

https://doi.org/ 10.24199/j.mmv.2010.67.06

publication LSID

lsid:zoobank.org:pub:5A8C650E-A34A-4072-A797-0A75D218DD7C

persistent identifier

https://treatment.plazi.org/id/365B627F-FF8A-FFD0-FCC6-5869FB3A5E36

treatment provided by

Felipe

scientific name

Myriotrochus hesperides O’Loughlin and Manjón-Cabeza, 2009
status

 

Myriotrochus hesperides O’Loughlin and Manjón-Cabeza, 2009 View in CoL

Figure 5a View Figure 5 ; table 2

Myriotrochus hesperides O’Loughlin and Manjón-Cabeza (in

O’Loughlin et al., 2009): 9, fig. 2e, f, table 1.

Diagnosis (following O’Loughlin et al. 2009). Myriotrochid species up to 13 mm long; 12 peltato-digitate tentacles, about 7 small rounded digits per tentacle; lacking tentacle ossicles; plates of calcareous ring asymmetrical with pointed anterior projections / teeth, 2 radial plates each with 2 anterior projections, remaining plates with single anterior projection, wide rounded tongue-like posterior projections of variable length; ossicles myriotrochid wheels only, few only in posterior dorsal body wall; wheels of one type, all teeth pointing towards centre of hub; spokes irregular, about half branching proximally, some branches not reaching rim, some spokes with crossconnections; teeth variably sub-equal or different in size; hubs small, irregular, not disc-like, lacking perforations, formed by junction of spokes; largest wheel with diameter 248 µ m, hub diameter 40 µ m, 13 spokes at hub, 23 spokes at rim, 30 equal teeth; smallest wheel with diameter 200 µ m, hub diameter 24 µ m, 12 spokes at hub, 16 spokes at rim, 28 unequal teeth.

Distribution. Antarctic Peninsula, 65.47ºS 69.03ºW, 350 m.

Remarks. Myriotrochus hesperides O’Loughlin and Manjón-Cabeza, 2009 was the second Antarctic shelf Myriotrochus species to be described. Amongst Myriotrochus species it is closest to Myriotrochus clarki Gage and Billett, 1986 from the Rockall Trough in the N Atlantic at 1605–2515 m. The species are distinguished in O’Loughlin et al. 2009.

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