Rostanga

Rostanga is a genus of sea slugs in the family Discodorididae. Some sources, such as The Sea Slug Forum still classify Rostanga in the family Dorididae.

Phylogeny
A phylogenetic analysis shows that the species Rostanga aureamala, Rostanga elandsia, Rostanga pepha and Rostanga setidens form a sister group with the other species in this genus. The species from Japan and the Marshall Islands form the basal clade. The species from the tropical Indo-Pacific are not monophyletic. The species from the Atlantic Ocean and the Eastern Pacific from a clade that is a sister group to R. australis. The Indo-Pacific species Rostanga bifurcata forms a sister group to Rostanga dentacus.

Species
Species within the genus Rostanga include:


 * Species brought into synonymy:
 * Rostanga australis Rudman & Avern, 1989: synonym of Rostanga crawfordi (Burn, 1969)
 * Rostanga evansi Eliot, 1906 : synonym of Jorunna evansi (Eliot, 1906)
 * Rostanga hartleyi Burn, 1958 : synonym of Jorunna hartleyi (Burn, 1958)