Costasiella sp. from Ratnagiri, India

May 18, 2009
From: Vishal Bhave

This unidentified aeolid was found in rock pool; on an alga (Sargassum spp.). It is still alive in my tank.

Locality: Rocky patch, Mandavi, Ratnagiri, 0.5 foot, Maharashtra, India, Arabian sea, 14 February 2009, Intertidal, beneath rocks in rockpool. Length: 8 mm. Photographer: Vishal Bhave.

Vishal Bhave

vishalbhave@gmail.com

Bhave, V.J., 2009 (May 18) Costasiella sp. from Ratnagiri, India. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22422

Dear Vishal,

Although the cerata remind us of an aeolid, this is in fact a herbivorous sacoglossan,Costasiella sp. 3. One clue to its identity is the position of its black eyes - very close together in the dorsal midline between the head tentacles. Species of Costasiella have usually been found associated with species of the green algal genus Avrainvillea

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (May 18). Comment on Costasiella sp. from Ratnagiri, India by Vishal Bhave. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22422

Factsheet

Costasiella sp. 3

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