Philinopsis reticulata from Reunion Island
February 27, 2008
From: Philibert Bidgrain
Dear Bill
We found this specimen [Upper Photo] crawling on the sustrate in a lagoon during the night [Reunion Island, Indian Ocean]. It has the same pattern that another specimen found some years ago [Lower Photos ]
Do you think that it's a variant of P. cyanea or of P. reticulata?
Best regards
Philibert Bidgrain
pbidgrain@yahoo.fr
http://vieoceane.free.fr/runseaslug/indexslug.htm
pbidhrain@yahoo.fr
Bidgrain, P., 2008 (Feb 27) Philinopsis reticulata from Reunion Island. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21218Dear Philibert,
These are two quite distinct species. The upper is P. cyanea and the lower P. reticulata. It's not easy to see from these photos but P. cyanea has a broad anterior end to the head and the posterior end of the headshield is a raised flap with a prominent median crest. P. reticulata on the other hand belongs to a 'subgroup' of the genus Philinopsis with a narrow anterior end to the head and a simple rounded posterior end to the head shield. There are major internal differences to the foregut which usually show externally as a rounded median bump at the front of the head.
Best wishes,
Bill Rudman
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