Halgerda bacalusia is a species of sea slug, a dorid nudibranch, shell-less marine gastropod mollusks in the family Discodorididae.WoRMS (2014). Halgerda bacalusia Fahey & Gosliner, 1999. Accessed through: World Register of Marine Species on 2015-01-08

Distribution This species was described from Richelieu Rock, Andaman Sea, Thailand.Rudman, W.B., 2000 (April 18) Halgerda bacalusia Fahey & Gosliner 1999. [In] Sea Slug Forum. Australian Museum, Sydney.

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