Re: Chromodoris willani & C. boucheti

February 21, 2007
From: Bob Whorton


Concerning message #19444:

Hi Bill,

Thanks again for the ID info, the Chromodoris colour similarities between species is quite confusing. Something else I noticed is the difference in colour of the rhinophore on C. willani; blue/grey - red/orange as in the last batch.
I'm including a few more along the same lines to add to the debate of "It was white with black stripes"

Here are photos of  C. lochi, C. dianae and an individual with yellow block mantle edging.

Locality: Halmahera/Raja Ampat, 12m, Indonesian , Halmahera Sea, July & December 2006, Typical sloping reef with coral outcrops. Length: 3 cm+. Photographer: Bob Whorton.

Bob Whorton

DrBob.Whorton@btinternet.com

Whorton, R., 2007 (Feb 21) Re: Chromodoris willani & C. boucheti. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19469

Dear Bob,

Thanks for the photos. The top one is the colour form of C. dianae in which the gills are orange-yellow rather than yellow-tipped. The middle one is C. willani, which is quite distinctive in having white spots on the gills and rhinophores, although the background colour can vary from greyish to pinkish. The photo alongside is also C. dianae, but in this case I suspect it is the one which has gills which are white in the lower half and yellow in the upper half.

I am not sure which one you thought was C. lochi, but that species differs in having translucent gills, which range from pinkish to yellowish in colour but lack white spots, and a greyish blue to white mantle which is a uniform colour, lacking any white spots.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Feb 21). Comment on Re: Chromodoris willani & C. boucheti by Bob Whorton. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19469

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