Description of the Aeolid Nudibranch Favorinus tsuruganus Baba and ABE, 1964 From Eastern Australia

Abstract

Favorinus tsuruganus Baba and Abe, 1964 (Opisthobranchia: Nudibranchia) is redescribed from material taken in Queensland and New South Wales waters. Characters of its external anatomy, alimentary and reproductive systems (e.g., structures of propodial tentacles, ceratal arrangement, jaws, penis), as well as the behaviour of living animals agree well with those known not only for Japanese specimens but also for Favorinus species in general. The radular teeth are unusual, but not exceptional, in having smooth sides to the cusp. Coloration and shape of the rhinophores are the most distinctive features.