From Natural History of Southeast Alaska
Red flabellina (Flabellina trophina), except that its rhinophores are smooth, bumpy, or warty, as opposed to finely annulate. Another difference is that F. verrucosa has a rounded oral veil ("snout"), whereas F. trophina has a blunt, triangular oral veil. Other diagnostic criteria, such as tail length (longer in F. verrucosa than F. trophina), length of white dorsal stripe (longer in F. verrucosa), and extent of white in cerata (one-fourth white in F. trophina), seem to be less reliable.
- WoRMS Page for Flabellina verrucosa
- Search Arctos Database for Flabellina verrucosa (Southeast only)
- Search Arctos Database for Flabellina verrucosa (entire database)
- Encyclopedia of Life search for Flabellina verrucosa
- iNaturalist Observations for Flabellina verrucosa in Southeast Alaska