Gampsosteonyx batesi Boulenger, 1900, Proc. Zool. Soc. London, 1900: 442. Holotype: BMNH, by original designation. Type locality: "Benito River", elsewhere in the original publication noted to be "Benito River, north of the Gaboon River between 20 and 30 miles inland from the coast, Gaboon", Equatorial Guinea.
Dilobates platycephalus Boulenger, 1900, Proc. Zool. Soc. London, 1900: 444. Holotype: BMNH, by original designation. Type locality: "Benito River", elsewhere in the original publication suggested to be "Benito River, north of the Gaboon River between 20 and 30 miles inland from the coast, Gaboon", Equatorial Guinea. Synonymy with Gampsosteonyx batesi by Boulenger, 1903, Mem. R. Soc. Esp. Hist. Nat., 1: 61-64.
Astylosternus batesi — Parker, 1931, Ann. Mag. Nat. Hist., Ser. 10, 7: 495.
Benito River Night Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 37).
Cameroon south of Sanaga River, Equatorial Guinea, Gabon, southwestern Central African Republic, and Mayombe Hills of extreme western Dem. Rep. Congo, seal level to 1000 m elevation.
In the Astylosternus diadematus group of Amiet, 1978 "1977", Ann. Fac. Sci. Cameroun, 23-24: 99-227. Removed from the synonymy of Astylosternus diadematus by Amiet, 1978 "1977", Ann. Fac. Sci. Cameroun, 23-24: 99, where it had been placed by Parker, 1936, Proc. Zool. Soc. London, 1936: 135-166. Deckert, 1938, Sitzungsber. Ges. Naturforsch. Freunde Berlin, 1938: 150, recognized this species without comment on Parker's earlier action. Gabon record provided by Lötters, Gossmann, Obame, and Böhme, 2001, Herpetofauna, Weinstadt, 23: 23. Lasso, Rial, Castroviejo, and De la Riva, 2002, Graellsia, 58: 21-34, provided notes on ecological distribution in Equatorial Guinea.
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