Costasiella sp. 3 from New Caledonia

September 21, 2007
From: Jean-François Hervé


Dear Bill,

Could you help me to ID the two species of little limapontiids which we can see on an algae in this and a second message [#20688]. Maybe this is Placida dendritica and the other Costasiella ocellifera, or the reverse?

Locality: Noumea, Ouemo Beach, 10 m, New Caledonia, Pacific ocean, July and January 2006, Algae. Length: 5 mm. Photographer: Jean-François Hervé.

Best wishes.
Jean-François Hervé.

jfherve@free.fr

Hervé, J.-F., 2007 (Sep 21) Costasiella sp. 3 from New Caledonia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20752

Dear Jean-François,

This is what I am calling Costasiella sp. 3.  Species of Costasiella seem to feed on green algae of the genus Avrainvillea, which could well be the one your animals are on. One easy way to recognise species of Costasiella are their eyes. No other group of sacoglossans have their eyes close together in the middle of the head like this.

I found this is species in Noumea in 1988 on the green algae  Avrainvillea nigricans.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Sep 21). Comment on Costasiella sp. 3 from New Caledonia by Jean-François Hervé. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20752

Factsheet

Costasiella sp. 3

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