Ophiactis Lütken, 1856

Boissin, Emilie, Hoareau, Thierry B., Paulay, Gustav & Bruggemann, J. Henrich, 2016, Shallow-water reef ophiuroids (Echinodermata: Ophiuroidea) of Réunion (Mascarene Islands), with biogeographic considerations, Zootaxa 4098 (2), pp. 273-297 : 278

Genus Ophiactis Lütken, 1856

The genus includes 51 recognized species. Clark and Rowe (1971) report 18 species from the shallow IWP, but currently only 11 of these are recognized ( Stöhr et al. 2016). They can be divided into two groups: (i) species with two distal oral papillae on each side of a jaw and six or more arm spines (4 species), and (ii) species with a single distal oral papilla and up to five arm spines per side (7 species).