Re: Elysia from Belize?

February 21, 2005
From: Jim Lyle

Concerning Julianne's message [#13182], I think it is Gastropteron chacmol. The G. chacmol that we have been finding in Cozumel, Mexico look exactly like Julianne's image shown in ambient light. It's only when you light them with a strobe that you can see that they are indeed red with a yellow margin.

Locality: Cozumel, Quintana Roo, Mexico, Caribbean. Depth: 10 meters, Length: 6 mm. 8 February 2005. on sand. Photographer: Jim Lyle.

Jim Lyle

Lyle, J., 2005 (Feb 21) Re: Elysia from Belize?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Jim,
Thanks for sorting that out. If any one has photos of real Gastropteron vespertilium that I can add to the Forum I would be grateful.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Feb 21). Comment on Re: Elysia from Belize? by Jim Lyle. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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