Hypselodoris bertschi
Gosliner & Johnson, 1999

Order: NUDIBRANCHIA
Suborder: DORIDINA
Superfamily: EUDORIDOIDEA
Family: Chromodorididae

DISTRIBUTION

Hawaii

PHOTO

Oahu? Hawaii. Specimens ranging from about 10mm (upper right) to 25mm (lower right), PHOTOS: Scott Johnson.

Mantle has rows of blue-purple dashes arranged in 4-7 rows. Between them are thin white lines. An orange band, sometimes very faint borders the mantle and the foot has a bluish border. The white gills have an orange tip and an orange patch near the base. [Gosliner & Johnson describe the gills as being 'white with an orange rachis'. The photos in the Forum and descriptions by Ostergaard (1955) and Kay & Young (1969) describe the gills as having an orange tip and a basal orange patch]. Animal grows to 10-20mm in length.

This animals previously identified with H. lineata (Pease, 1860) by Ostergaard (1955) and Kay & Young (1969) are this species, but as I discuss in a separate message, Pease's Doris lineata and Bergh's C. peasei refer to H. peasei.

References:
•Ostergaard, J.M. (1955) Some opisthobranch mollusca from Hawaii. Pacific Science, 9(2): 110-136.
•Kay E.A., & Youmg, D.K. (1969) The Doridacea (Opisthobranchia Mollusca) of the Hawaiian Islands Pacific Science, 23(2): 18-37.
•Johnson, S. (1983) Distribution of two nudibranch species on a subtidal reef on the western shore of Oahu, Hawaii. The Veliger, 25(4): 356-364.
•Bertsch, H. & Gosliner, T.M. (1989) Chromodorid nudibranchs from the Hawaiian Islands. The Veliger, 32(3): 247-265.
•Gosliner, T.M. & Johnson, R.F. (1999) Phylogeny of Hypselodoris Nudibranchia: Chromodorididae) with a review of the monophyletic clade of Indo-Pacific species, including descriptions of twelve new species. Zoological Journal of the Linnean Society, 125: 1-114.

Authorship details
Rudman, W.B., 2000 (February 9) Hypselodoris bertschi Gosliner & Johnson, 1999. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/hypsbert

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