Wikipedia
Montereina
Montereina is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod mollusks in the family Discodorididae.
The name of this genus has been declared a temporary name. The name "Montereina" has been used by Dayrat (2010) for "all the species that belong to the metaphyletic group at the base of Discodorididae", as an alternative to naming a new genus for every species. This option was taken in order to comply with the principles of a phylogenetic nomenclature. In this sense, it is much more extensive than the hitherto monotypic genus Montereina MacFarland, 1905 (Type species Montereina nobilis MacFarland, 1905, by original designation.