A sacoglossan built quite unlike an Elysia: instead of two side flaps it carries a crowd of flat leaf-shaped cerata over the whole back, each patterned in cream, orange and black. The effect is closer to a bunch of petals than to a slug, and the animal reaches about 4 cm (1.6 in).
Those cerata are detachable. Handled or attacked, the slug sheds them, and the discarded leaves go on twitching for some time - a decoy that occupies a predator while the animal crawls away, and one of the reasons a photograph of an undamaged individual is worth taking carefully. They regrow. Feeding follows the family pattern, puncturing algal cells and draining them, though this genus keeps chloroplasts for a shorter time than Elysia does. It is a night find on sheltered rubble, and uncommon enough here that most divers never see one.
- body covered in flat leaf-shaped cerata, not side flaps
- cerata patterned in cream, orange and black rings
- cerata drop off when the animal is disturbed
- length up to 4 cm
