Hyperolius köhleri Mertens, 1940, Senckenb. Biol., 22: 121. Holotype: SMF 28291, according to Laurent in Frost, 1985, Amph. Species World: 211. Type locality: "Musake-Quelle, oberhalb Buëa, 1800 m. H., Kamerun-Berg", Cameroon.
Chlorolius koehleri — Perret, 1988, Bull. Soc. Neuchatel. Sci. Nat., 111: 46.
Hyperolius (Chlorolius) koehleri — Amiet, 2012, Rainettes Cameroun: 362.
Koehler's Green Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 66).
Southeasternmost Nigeria through southern Cameroon to northern Gabon in forest; likely to be found in Equatorial Guinea and adjacent Rep. Congo.
Discussed by (as Hyperolius koehleri) Amiet, 1977 "1976", Ann. Fac. Sci. Cameroun, 21-22: 159-169, who described the tadpoles. See account by Schiøtz, 1999, Treefrogs Afr.: 88-89. See account for Cameroon by Amiet, 2012, Rainettes Cameroun: 362-371.
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