Hypselodoris melanesica is a species of sea slug or dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.MolluscaBase (2018). Hypselodoris melanesica Gosliner & Johnson, 2018. Accessed through: World Register of Marine Species on 2018-10-02.
Distribution This nudibranch was described from Southern Sek Island, Madang Lagoon, Madang, Papua New Guinea, . It is known only from Papua New Guinea and the Solomon Islands.Gaensslen, R.E., 2007 (Aug 18) Hypselodoris bullocki ? from Papua New Guinea. [Message in] Sea Slug Forum. Australian Museum, Sydney.
Description Hypselodoris melanesica has a translucent pale purple body with a thin white band at the edge of the mantle. The gills are light orange, becoming darker orange at the base. The gill pocket is deep violet. The rhinophores have bright orange clubs and a deep purple sheath at the base. This species can reach a total length of at least 30 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. 195
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