Myja karin Martynov, Mehrotra, Chavanich, Nakano, Kashio, Lundin, Picton & Korshunova, 2019

Photographed by: Umiushi Divermasa
Location: Wannai, Osezaki, Higashiizu, Japan
Date: 2016/09/19
Length: 15mm
Depth: 8.0m
Water temperature: 23.0℃

MORPHOLOGY

Up to ten ceratal rows, ground colour translucent greyish, ceratal cores light to dark greyish, ceratal tops dull reddish, apices with white spot, anterior cerata with brownish basal spot, no sparse white spots in the first half of the dorsal part, white gonad spherules moderately dense, cerata moderately widened at top without smaller separate cupola-shaped tip, central tooth narrowly triangular with very sharp non-pitted top and numerous lateral denticles, up to 20–30 small irregular in size denticles, very distinct ridges and furrows on the teeth surface, no accessory penial gland, penis unarmed.

DISTRIBUTION

Central parts of the Pacific coast of the main Japanese island of Honshu; potentially can occur at least at the southern parts of Honshu and Kyushu.

ETYMOLOGY

In honour of Karin Fletcher (Port Orchard, Washington), who has made considerable recent efforts in uncovering hidden diversity and understanding of the nudibranch fauna of the NE Pacific.