Re: Stiliger akkeshiensis from Kuril Islands

September 9, 2005
From: Kathe R. Jensen

Note added 2 March 2006: Russian animals are now considered to be Hermaea vancouverensis [see message #15995].

Dear Alexei & Bill,
Concerning message #14612:
The species on these pictures seems to be very similar to Hermaea vancouverensis O'Donoghue. I am answering this message from my home, and I don't have Baba's paper here, so I cannot compare. One reason for placing the species in Hermaea is the rolled rhinophores where one part extends beyond the rest. The teeth of this species are not particularly Hermaea-like, but H. vancouverensis feeds on diatoms, which is a rather unusual diet for sacoglossans. Is there any possibility that you could spare a few preserved specimens?

Best wishes,
Kathe

krjensen@snm.ku.dk

Jensen, K.R., 2005 (Sep 9) Re: Stiliger akkeshiensis from Kuril Islands. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14724

Dear Kathe,
Baba described the rhinophores as "stout, auriculate with a longitudinal groove on the latero-ventral side"  and says the cerata are arranged in "about 8 transverse rows of 2 or 3 each". On his drawing of the preserved animal the two patches in front of the rhinophores and the U shaped mark behind the rhinophores are present, although not mentioned in the text. I guess "auriculate with a tranverse groove" in a preserved animal could equate with enrolled rhinophores in a living animal. if anyone has photo of H. vancouverensis it would be nice to add it to the Forum
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Sep 9). Comment on Re: Stiliger akkeshiensis from Kuril Islands by Kathe R. Jensen. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14724

Factsheet

Hermaea vancouverensis

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