Thuridilla virgata from Mauritius

November 1, 2002
From: Marina Poddubetskaia

Dear Bill,
In Mauritius I saw many specimens of this little sacoglossan in several sites. It seems to be quite common there. I think, it is a Thuridilla species but I can't recognize which one. It looks a little like Thuridilla gracilis, but:
- the rhinophores are orange-yellow and not just tipped with orange
- the foot and the head aren't edged with orange (I looked at it closer in a tank)
- the whitish mark on the head is Y-shaped and not T-shaped

Have you any idea which species is it?

Location: Pereybere, Mauritius, Indian Ocean, Site: L'aquarium de Pereybere
Upper and Lower Left: October 15, 2002, Depth: 10m, Size: 15-17mm
Lower Right: animal found under a dead coral, October 12, 2002, Depth: 10m, Size: 12-13mm. Photos: Marina Poddubetskaia - Nembro website

Thank you in advance.
Best wishes,

Poddubetskaia, M., 2002 (Nov 1) Thuridilla virgata from Mauritius. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Marina,
This is Thuridilla virgata. A nice addition to the Forum. It is only known from the Indian Ocean, and was first described from specimens collected in Mauritius.
Best wishes,
Bil Rudman

Rudman, W.B., 2002 (Nov 1). Comment on Thuridilla virgata from Mauritius by Marina Poddubetskaia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Thuridilla virgata

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