[3] A careful study by Carmona et al. using DNA sequencing showed that these were really two sister species and that they were not members of the family Aeolidiidae.

It has been reported from Madagascar, Papua New Guinea, Indonesia, the Philippines, Palau, Hawaii and Japan.

[4][5] Pleurolidia juliae is an aeolid nudibranch with a black body and a dorsal white line.

A broad, irregular white line runs along the dorsal midline.

The cerata are in small groups which are not always symmetrical, sometimes having a zigzag arrangement.