Nudibranch Similarities

Thuridilla gracilis group

Author: Dr. Richard C. Willan

It is easy to separate them externally: the name Thuridilla bayeri covers all individuals with blue spots and Thuridilla gracilis covers all individuals with no blue spots.

Thuridilla bayeri from Saipan, Nthn. Mariana IslandsIdentification reviewed by Richard Willan
Thuridilla bayeri
(11 photos)
Thuridilla gracilis from Lembeh, Indonesia
Thuridilla gracilis
(24 photos)
 

Triopha maculata group

Rostanga pulchra from California, USAIdentification reviewed by Gary McDonald
Rostanga pulchra
(7 photos)
Triopha maculata from California, USAIdentification reviewed by Gary McDonald
Triopha maculata
(9 photos)
 

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(42 groups)