Striped Chromodoris roboi?

April 4, 1998
From: Lindsay Warren

Dear Bill
Many thanks for coming back to me so quickly on Noumea crocea. The next one attached (? Chromodoris) was less than 1cm long and found in a similar location - ie between 0-60 ft of water on a leeward wall of Pulau Hoga, a very small island next to Pulau Kaledupa in the Tukang Besi islands, SE Sulawesi. The wall is heavily covered in both hard and soft corals as opposed to a sandy or rubbly bottom. The edge of the mantle is wavy with mid-blue edges, pale blue as one looks towards the centre back which was sage green with conspicuous creamy spots. The darker intervening patches are purely shadow rather than colour markings. The gills and rhinophores where translucent white with burgundy edging to them. The gills had five simple branches. The front edge of the mantle was quite broad which it would 'flap' as it moved.
Many thanks
Lindsay Warren

100014.2112@compuserve.com

Warren, L., 1998 (Apr 4) Striped Chromodoris roboi?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/159

This is almost certainly a juvenile. It is probably Chromodoris roboi which has only recently been named. It is has been recorded from Ryukyu Islands, Okinawa, and both eastern and western Australia. If your animal is the same species it helps fill in a gap in the distribution. The normal colour pattern consists of a yellowish background colour and white or translucent spots. A good picture of a typically coloured animal can be found on Bob Bolland's site.

The photo I have included here from Western Australia is of an animal in which the translucent spots have become tranverse streaks across the mantle...Bill Rudman.

Rudman, W.B., 1998 (Apr 4). Comment on Striped Chromodoris roboi? by Lindsay Warren. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/159

Factsheet

Chromodoris roboi

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