January 15, 2004
From: C. Carlson & P. Hoff
Following our last message I am sending a few photos of Costasiella usagi showing colour variation. None really tell
the whole picture, but together they may make some sense. In this message is a photo of two animals on their food algae Avrainvilla. There are further variations in a second message
Upper photo shows the two together.
4.5mm (dark form), 6.0mm (light form); Cocos Lagoon, Guam. 25 January 1989. On Avrainvilla
Clay & Patty Jo
Carlson, C. & Hoff, P., 2004 (Jan 15) Colour variation in Costasiella usagi . [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11916
Dear Clay & Patty Jo,
Thanks very much for the photos in both your messages. When we compare the animals in your photos with the one in Nils Anthes message it shows how dangerous it is to describe new species from very few animals.