Thuridilla decorata
(Heller & Thompson, 1983)

Order: SACOGLOSSA
Superfamily: ELYSIOIDEA
Family: Elysiidae

DISTRIBUTION

Known only from the Red Sea

PHOTO

Red Sea at 'Black Mountain' dive site, about 550km south of Jeddah, on 21 August 1992. 8mm long and found on filamentous algae on the reef flat at a depth of 1.5m. Photos: John Chuk.

First described from the Sudanese Red Sea as Elysia decorata. Characterised by the brownish green colour of the parapodia and the broken black lines along the parapodial edge and at the junction of the foot and the parapodia. The broad creamish white parapodial border varies greatly in width along the edge similar to the border of Chromodoris fidelis. There a few reocrds of this species in the literature.

References:
• Heller, J. & Thompson, T.E. (1983)Opisthobranch molluscs of the Sudanese Red Sea. Zoological Journal of the Linnean Society, 78(4): 317-348.
• Jensen, K.R. (1992). Anatomy of some Indo-Pacific Elysiidae (Opisthobranchia: Sacoglossa [=Ascoglossa]), with a discussion of the generic division and phylogeny. Mal. Soc. London, 58: 257-96.

Authorship details
Rudman, W.B., 2002 (January 6) Thuridilla decorata (Heller & Thompson, 1983). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/thurdeco

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