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Description
Caloria is a genus of aeolid nudibranchs in the family Facelinidae. It includes C. elegans, known from the European Atlantic and the Mediterranean, and C. indica, an Indo-Pacific species that reached the Mediterranean via the Suez Canal and was recorded there only in 1986 near Ashqelon, Israel. The slugs feed on hydroids.
Identification
In both species the body is narrow with a pointed tail, the finger-like cerata are arranged in groups along the sides (six to eight groups), the rhinophores are smooth and the oral tentacles are long. In C. elegans the body is translucent whitish with a dark spot near each ceras tip; in C. indica the head is orange with white streaks and the cerata are banded in red, orange, blue and yellow.
Species in this genus (2)
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