Costasiella nonatoi from the Bahamas

March 4, 2004
From: Colin Redfern


Dear Bill,
To add to Marina's record [#12355] of Costasiella nonatoi from the Bahamas, here are photos of three specimens from Abaco. The dark brown color in these photos may be a bit misleading, as the animals appear predominantly black in life, and also appear blacker when photographed against a lighter background.

Clark (1984) reported that "individuals burrow into the felty thallus of Avrainvillea to feed and deposit egg masses".

A. 3mm. On Avrainvillea nigricans in 0.5m. Treasure Cay, July 3, 1992. B. 1.5mm. On an algae-covered rock in the surf zone, ocean side of Whale Cay, July 1, 1996. Rodger Bunnell, collector. C. 2.5mm. On Cladophora in 0.5m, Guana Cay, February 19, 2004. All locations in Abaco, Bahamas. Photos: Colin Redfern.

• Clark, K.B. 1984. New records and synonymies of Bermuda opisthobranchs (Gastropoda). The Nautilus, 98(2): 85-97.

Best wishes,
Colin

bahamianseashells@att.net

Redfern, C., 2004 (Mar 4) Costasiella nonatoi from the Bahamas. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12365

Thanks Colin,
I've included a close-up of the head of one of your animals to show some of the colour detail which is usually missed (or obscured by black pigment) in such small 'black' animals.
Best wishes
Bill Rudman

Rudman, W.B., 2004 (Mar 4). Comment on Costasiella nonatoi from the Bahamas by Colin Redfern. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12365

Factsheet

Costasiella nonatoi

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