Hypselodoris nigrolineata is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.MolluscaBase (2018). Hypselodoris nigrolineata (Eliot, 1904). Accessed on 2019-01-18.Johnson R.F. & Gosliner T.M. (2012) Traditional taxonomic groupings mask evolutionary history: A molecular phylogeny and new classification of the chromodorid nudibranchs. PLoS ONE 7(4): e33479]
Distribution This nudibranch is found in the Indian Ocean off Kenya and Tanzania.Rudman, W.B., 2000 (May 1) Hypselodoris nigrolineata (Eliot, 1904). [In] Sea Slug Forum. Australian Museum, Sydney.Rudman, W.B. (1977) Chromodorid opisthobranch Mollusca from East Africa and the tropical West Pacific. Zoological Journal of the Linnean Society 61: 351-397.
Description Hypselodoris nigrolineata has a white-cream body and a bright purple mantle edge and foot. There are often black striated lines running longitudinally along its dorsum. The gills and rhinophores are orange.Rudman W.B. (1982) The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: Chromodoris quadricolor, C. lineolata and Hypselodoris nigrolineata colour groups. Zoological Journal of the Linnean Society 76: 183-241. page(s): 236 This species can reach a total length of at least 35 mm. It is similar in appearance to Hypselodoris maritima.Gosliner, T.M., Behrens, D.W. & Valdés, Á. (2008) Indo-Pacific Nudibranchs and seaslugs. A field guide to the world's most diverse fauna. Sea Challengers Natural History Books, Washington, 426 pp. page(s): 266Gosliner, 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. 192
References