Ophiotreta Verrill, 1899

Stöhr, Sabine, 2024, Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata), European Journal of Taxonomy 933, pp. 1-98 : 43-44

Genus Ophiotreta Verrill, 1899

Fig. 19F–I

Type species

Ophiacanha lineolata Lyman, 1883 .

Examined species

Ophiotreta valenciennesi (Lyman, 1878) .

Oral GP

Not examined, but considered present.

Adradial GP

Bar-like, thicker rod with slightly wider distal end with lateral processes, single condyle and groove.

Abradial GP

Thick curved scale, half as long as adGP, straight distal articular edge of abradial surface with conspicuous pore.

Oral shields

Not examined.

Radial shield

Inner side with distal condyle and curved groove, proximal to this a depression with protruding proximal edge.

Figures

Fig. 19. Ophiotomidae Paterson, 1985, SEM. A–E. Ophiocopa spatula Lyman, 1883. A. Radial shield, inner aspect. B. adGP, abradial aspect. C. adGP, adradial aspect. D. Madreporite, inner aspect. E. abGP, abradial aspect. F–I. Ophiotreta valenciennesi (Lyman, 1878). F. Radial shield, inner aspect. G. adGP, abradial aspect. H. adGP, abradial aspect. I. abGP. Scale bars: A–E= 0.5 mm; F–I =1 mm.