Hypselodoris insulana is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.
Distribution This nudibranch is found in the Northwestern Hawaiian Islands of Midway and Kure Atoll in the central Pacific Ocean.Rudman, W.B., 2000 (February 9) Hypselodoris insulana Gosliner & Johnson, 1999. [In] Sea Slug Forum. Australian Museum, Sydney.
Description Hypselodoris insulana has an off-white or brown coloured body and a bright purple mantle edge and foot. There are white longitudinal lines on its dorsum. The gills and rhinophores are white, lined with orange bands. This species can reach a total length of at least .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. 186
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