Flabellum (Ulocyathus) japonicum bythios Cairns in Cairns & Keller, 1993

Cairns, S. D. , and N. B. Keller, 1993. New taxa and distributional records of azooxanthellate Scleractinia from the tropical south-west Indian Ocean, with comments on their zoogeography and ecology. Ann. S. Afr. Mus. 103(5): 213-292, 13 pls.