West Atlantic from Caribbean to Argentina.
Anyone with a photo to share??
Typical species of Rostanga with a reddish body, sometimes with darker patches. Mantle covered with caryophyllidia, rhinophores with vertical lamellae. Gills unipinnate.
- Marcus, E. (1958) On western Atlantic opisthobranchiate gastropods. American Museum of Natural History, Novitates, 1906: 1-82.
Rudman, W.B., 2006 (October 18) Rostanga byga Marcus, 1958. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/rostbyga