Chromodoris albonares? from Sulawesi

July 2, 2000
From: Lindsay Warren

Dear Bill
I was just looking through your species list at Chromodoris albonares which reminded me of a specimen I found in August 1998 (OWN48) off Pulau Hoga in the Tukang Besi Islands, SE Sulawesi [Operation Wallacea]. I have attached a picture taken by Adam Powell. At the time we thought it might be a juvenile Chromodoris
verrieri but on looking at C. albonares I think that this is a more likely identification. The most striking thing about it was the large lamellate
rhinophores which seemed 'outsized' for the length of body (5.5 mm). I found it at a depth of 8 ft on the reef crest crawling over a dead ark shell in a patch of sand. The gills were relatively small with a slightly
darker area to anterior portion which might have been internal organs showing through. Through the underside of the foot one could see a pale grey area.

What do you think?

All the best
Lindsay Warren

100014.2112@compuserve.com

Warren, L., 2000 (Jul 2) Chromodoris albonares? from Sulawesi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1849

Dear Lindsay,
Your first thought was correct. C. albonares only has a single colour band ( of orange-yellow) around the mantle edge. It does have disproportionally large rhinophores but that appears to be one of its distinguishing features. Usually, as in your photo, chromodorids with large rhinophores are juveniles. At 5mm your animal is definitely a juvenile C verrieri, which is distinguished by the red and yellow borders, and the white-edged gills and rhinophores. I don't think the lack of a reddish background to the rhinophore clubs is of great significance. It appears to be an internal colouration which is sometimes present and sometimes not.

Best wishes,
Bill Rudman.

Factsheet

Chromodoris verrieri

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