Voss 1974. Coleoptera Curculionidae partim. Hanstri m, B.; Hanstrom, B.; Brinck. P., ; Brinck, P.; Rudebeck, G.[Eds]. South African animal life. Volume 15. Results of the Lund University expedition in 1950-1951. l-532., Swedish Natural Science Research Council, Stockholm., 1974: 509-510. Chapter pagination: 395-479