Species of Elasmogorgia and Euplexaura (Cnidaria, Octocorallia) from Japan with a discussion about the genus Filigella

Abstract Octocorals with thread-like colony shape have been re-examined, mainly from Japanese waters. The holotypes of Elasmogorgia filiformis and Filigella boninensis and a syntype of Filigella mitsukurii have been studied. Euplexaura arbuscula is identified and Euplexaura yayoii sp. n. described.

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