Identification Key to the Phyllidiids of the Indo-Pacific Ocean
According to morphological and anatomical features
Thanks to Alexander Fahrner and Lothar A. Beck

34. Dorsum white with 6 to 10 large black spots. Rhinophores cream coloured with 7 to 9 lamellae. Foot, gills and oral tentacles white. - Phyllidia scottjohnsoni Brunckhorst, 1993

-  Dorsum orange with numerous (more than 10) large black spots. Rhinophores orange with 11 to 13 lamellae. Foot, gills and oral tentacles orange. - Phyllidia polkadotsa Brunckhorst, 1993