Re: Adalaria? from British Colombia

March 18, 2001
From: Jeff Goddard

Hi Bill,
Regarding Marli Wakeling's onchidoridid from British Columbia: the shape of the body (significantly wider anteriorly), the long posteriorly curving rhinophores, and smooth conical dorsal papillae all point to an Acanthodoris. The only completely white Acanthodoris in the northeastern Pacific is A. pilosa. The branchial plumes in Marli's specimen look small for an Acanthodoris, especially A. pilosa, but they may have been partially contracted. Also, it would be useful to know the size of her specimen, as species of Acanthodoris grow much larger than other onchidoridids. Species of Acanthodoris also have few (if any?) spicules in their dorsal papillae, which makes them much softer to the touch than species of Onchidoris and Adalaria.
Best wishes,
Jeff

Goddard, J., 2001 (Mar 18) Re: Adalaria? from British Colombia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3993

Thanks Jeff,
Bill Rudman

Factsheet

Acanthodoris pilosa

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