Re: Roboastra tigris? from Galapagos

January 25, 2004
From: Ray Simpson

Note added 21 July 2005: This is now named Roboastra leonis

Regarding the Roboastra sp. from the Galapagos Ids in the recent message: It is shown in similar form in A Field Guide to Marine Mollusks of the Galapagos by Cleveland Hickman Jr [1999]. In this book, on pg. 127, it is called Roboastra sp. and is undescribed at the moment.

Here is the description from this book:
"The edge of the foot is blue-black. The body is patterned with yellow ochre and blue-black stripes. The rhinophores are bright orange with blue-black at their bases and tips. The gills are white with blue-black tips."

This seems identical to the pictured specimen. It is found in the Gulf of California and the Galapagos. It feeds on Tambja mullineri in the Galapagos and Tambja spp. in the Gulf.

Hope this helps...
Ray

P51MustNB@aol.com

Simpson, R., 2004 (Jan 25) Re: Roboastra tigris? from Galapagos. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12006

Thanks Ray,
I wouldn't have been surprised if this animal had turned out to be a variant of Roboastra tigris but I guess if both forms live sympatrically in the Gulf of California it could be something separate.
Thanks for letting me know,
Bill Rudman

Rudman, W.B., 2004 (Jan 25). Comment on Re: Roboastra tigris? from Galapagos by Ray Simpson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12006

Factsheet

Roboastra leonis

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