Identification Key to the Phyllidiids of the Indo-Pacific Ocean
According to morphological and anatomical features
Thanks to Alexander Fahrner and Lothar A. Beck
43. Dorsum with 4 large median tubercles capped in yellow and arranged rhomboid (diamond shaped); laterally 2 longitudinal swirls of black, also few other black rings or patches may occur on dorsum. Mantle edge white. Number of lamellae on each rhinophoral clavus 16-18. - Phyllidia willani Brunckhorst, 1993
- Dorsum with tubercles capped in white or yellow, in longitudinal rows; 6-9 black rings (each with a central tubercle) and small black patches all along the mantle margin. Narrow, yellow edge to mantle margin. Number of lamellae on each rhinophoral clavus 21-24. - Phyllidia babai Brunckhorst, 1993