Identification Key to the Phyllidiids of the Indo-Pacific Ocean
According to morphological and anatomical features
Thanks to Alexander Fahrner and Lothar A. Beck
36. Dorsum with 3 to 6 longitudinal, tuberculate, blue-grey ridges; black longitudinal lines occur on either side of the ridges. Tubercles capped in yellow. Number of lamellae on each rhinophoral clavus 27-32 (specimens larger than 60 mm). Very common and very large (up to 115 mm) species, occurs throughout the whole world tropical Indo-Pacific Ocean. - Phyllidia varicosa Lamarck, 1801
- Dorsum without distinct longitudinal ridges, if ridges present, then irregular, broken and pale grey. Blue-grey colouration absent. Number of lamellae on each rhinophoral clavus is always less than 26. - 37