Favorinus japonicus from Sulawesi

February 27, 2000
From: Lindsay Warren


Dear Bill
This unidentified aeolid was found by Richard Smith at 3.30pm on 4 June 1999 at a depth of 8.5 m on dead coral on a wall of Pulau Hoga [Tukang Besi Archipelago, SE Sulawesi, Indonesia - Operation Wallacea]. Size: 5 mm.

The body is translucent off-white with distinct solid white patches on the notum behind the rhinophores. The first patch is triangular in shape, the second Y shaped followed by two to three other irregular patches towards the finely tapering tail. The cerata on either side of the body are
curled inwards, are pink with white nobs along their length. The rhinophores are annulate with eyespots just visible behind them. There are two sets of anterior tentacles - an upper longer pair tipped with white and a lower shorter pair not visible in the attached shots. Photos: Lindsay Warren.

Do you know what this might be?

All the best
Lindsay Warren

100014.2112@compuserve.com

Warren, L., 2000 (Feb 27) Favorinus japonicus from Sulawesi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1965

Dear Lindsay,
Nice to have an easy one now and again. This is Favorinus japonicus which is found throughout the Indo-West Pacific. As you will see fro other comments on the page this is animal feeds on opisthobranch eggs and its cerata gradually change colour as the colour of the eggs it is eating change.
Best wishes,
Bill Rudman.

Rudman, W.B., 2000 (Feb 27). Comment on Favorinus japonicus from Sulawesi by Lindsay Warren. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1965

Factsheet

Favorinus japonicus

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