Ophiomastix

Okanishi, Masanori & Fujita, Yoshihisa, 2019, A comprehensive taxonomic list of brittle stars (Echinodermata: Ophiuroidea) from submarine caves of the Ryukyu Islands, southwestern Japan, with a description of a rare species, Dougaloplus echinatus (Amphiuridae), Zootaxa 4571 (1), pp. 73-98 : 87-88

Ophiomastix ? sp. (juvenile?)

Material examined. Shimoji Island (RUMF-ZE-02084[1]): “middle zone” of the “Akuma no Yakata” cave, under coral rubble, approximately 20 m depth, 5 February 2017.

Remarks. Blunt disc spines of this specimen suggest an affinity to the genus Ophiomastix . However, its

assignation to species is difficult because of its immaturity; it has small arms and few arm spines. To determine the species, examination based on more specimens is required.