Eastern Pacific Nudibranch News: Triopha catalinae AND Triopha modesta
New paper: https://link.springer.com/article/10.1007/s12526-020-01107-2 The external morphological difference is the shape of the lateral tubercles. Dendritic/short = T. modesta, Conical/rounded = T. catalinae. Close to all, if not 100%, of my SF Bay area observations are T. catalinae.