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Elysia trisinuata
Baba, 1949
 
Elysia trisinuata
Maximum size:  20 mm.

Identification:  This species is dark olive with scattered white flecks. The parapodia have three low chimneys frosted with white and the rhinophores are tipped in brick red. The body surface is covered with small papillae giving it a felt-like appearance and the inner surfaces of the parapodia have many elevated veins.

Natural history:  During sorting, a single Elysia trisinuata was found in a sample of Codium sp. collected from shallow water, probably at less than 1 m (3 ft). It almost perfectly mimics the appearance of its host algae and is known to feed on Codium elsewhere in the Pacific (Sea Slug Forum).

Distribution:  French Frigate Shoals: also known from southern Japan and Hong Kong.

Taxonomic notes:  First recorded in Hawaii by the 2006 CREEF expedition on Oct. 22, 2006. The name means "having three bends."

Photo:  CP: 20 mm: 2006 CREEF expedition; French Frigate Shoals; Oct. 22, 2006.

Observations and comments:

Note 1:  ( )
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