The family Aegiridae is kind of an odd collection, being a sister group to the cryptobranch dorids, plus the Goniodorididae and the Onchidorididae. Recently the Notodorids were added to this family under the genus Aegires.

This new species is just one of the several undescribed species discovered during our 2017 Nudibranch Festival at Crystal Blue Resort in Anilao, Philippines.

Initially it looks like Aegires villosus , but upon closer examination one can see that first, the body is not white to light yellow and the notal colors are reversed, the red dorsal striping and red tipped papillae of A. villosus being yellow in this species. The rhinophores are also tipped in yellow rather than purple. While A. villosus is reported to show considerable variation in color, this one is going to have to wait for internal examination and protein sequencing to convince me it is not distinct.

Nice find Gordon