Hypselodoris katherinae is a species of sea slug or dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.MolluscaBase (2018). Hypselodoris katherinae Gosliner & Johnson, 2018. Accessed through: World Register of Marine Species on 2018-09-26.
Distribution This nudibranch was described from Pulau Chebeh, off the NW tip of Tioman Island, eastern Malaysia, . It is also reported from the Philippines, Indonesia and Taiwan.
Description Hypselodoris katherinae has previously been confused with Hypselodoris carnea. The mantle is translucent pale pink with a series of longitudinal red-brown lines running down its length. These lines may be broken into short segments and may branch and anastomose. Small blue-purple diffuse spots are arranged at the mantle margin and may coalesce into a continuous line. The gills are white with orange lines on the rachis and the rhinophores are red to orange in colour. This species can reach a total length of 32 mm.Gosliner, T.M., Behrens, D.W. & Valdés, Á., 2018. Nudibranch and Sea Slug Identification - Indo-Pacific. New World Publications; 2nd Revised, Updated edition. 452 pp. , , p. 191
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