Identification of Geitodoris planata

June 13, 2001
From: Bernard Picton

Hi Bill,
Here are pictures of Geitodoris planata for comparison with Archidoris pseudoargus. Its food is not known for certain but I suspect that it prefers to eat the sponge Mycale rotalis. The spawn coil has a more fluted edge than that of Archidoris pseudoargus. In my experience this is a scarce animal, normally only seen in ones and twos. I have sent photos of the acid glands, which form the typical stellate pattern on the mantle, and the spawn coil, in a separate message.

UPPER RIGHT: a tray of animals collected with Greg Brown in May 1976 - Rutland Channel, Burtonport, Co. Donegal, Ireland
LOWER LEFT: two animals - Garland Stone, Skomer, Wales - Jun 1989
LOWER RIGHT: Lough Hyne, Co. Cork, Ireland - 17 Mar 1990

Bernard

bernard.picton.um@nics.gov.uk

Picton, B., 2001 (Jun 13) Identification of Geitodoris planata. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4552

Thanks Bernard,
Your multiple photos of this species and Archidoris pseudoargus certainly give us, who are unfamiliar with the species, a better understanding of its variation.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Jun 13). Comment on Identification of Geitodoris planata by Bernard Picton . [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4552

Factsheet

Geitodoris planata

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