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.[6] This species can reach a total length of at least 35 mm. It is similar in appearance to Hypselodoris maritima.[4][7][8]
^Rudman, W.B. (1977) Chromodorid opisthobranch Mollusca from East Africa and the tropical West Pacific. Zoological Journal of the Linnean Society 61: 351-397.
^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
^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): 266
^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. ISBN1878348671, ISBN978-1878348678, p. 192