Typový druh
Raja kujiensis Tanaka, 1916
Původní popis
Ishiyama R. 1952. Studies on the rays and skates belonging to the family Rajidae, found in Japan and adjacent regions. 4. A revision of three genera of Japanese rajids with descriptions of one new genus and four new species mostly occured in northern Japan. J. Shimonoseki Coll. Fish. v. 2 (no. 2). 1-34.
