Dendrodoris guttata from East Timor

July 11, 2006
From: Nick Hobgood

Dr. Bill,

Another one from Timor coming to you. It was hard to get a good shot but here are a few of a slug we have a hard time finding in the books. Can you help us ID it?

Locality: Town, 15 meters, East Timor, Banda, 08 July 2006, Sandy bottom. Length: 2.5 cm. Photographer: Nick Hobgood.

Nick Hobgood

Hobgood, N., 2006 (Jul 11) Dendrodoris guttata from East Timor. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Nick,

This is Dendrodoris guttata. It is usually considered a fairly rare species but the records on the Forum are building up a picture of its distribution. You don't actually say so but it seems to be laying this egg ribbon rather than just crawling over it. .If so it is an interesting new bit of information. The eggs look quite large, so it may have what is called lecithotrophic development where the veliger larvae hatch out of the egg capsule and spend a short period swimming in the plankton but don't feed. In species with planktotrophic larvae, which do feed in the plankton, tend to have smaller eggs than this, and at this magnification the individual eggs woulf not be distinguishable. But size is only a rough guide, and the only way we can be sure is to follow the actual hatching and growth of the larvae - a quite difficult process.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Jul 11). Comment on Dendrodoris guttata from East Timor by Nick Hobgood. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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