Arthroleptis leucomystax Boulenger, 1903, Mem. R. Soc. Esp. Hist. Nat., 1: 62. Holotype: BMNH, by original designation. Type locality: "Cap Saint Jean, Guinée espagnole [= Equatorial Guinea]".
Cardioglossa leucomystax — Boulenger, 1906, Ann. Mag. Nat. Hist., Ser. 7, 17: 321. Nieden, 1908, Mitt. Zool. Mus. Berlin, 3: 506.
Silver Long-fingered Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 37).
Rainforest from Nigeria to southeastern Central African Republic, northeastrn Dem. Rep. Congo, Gabon, Rep. Congo and region of the mouth of the Congo River.
In the original publication Boulenger mentioned other specimens from Rio Benito and Kribi; two of them are figured, but they are not conspecific: one (Figure 2) agrees with the description of Cardioglossa leucomystax, while the other (Figure 1) agrees with Cardioglossa gratiosa Amiet; see Amiet, 1972, Biol. Gabonica, 8: 225 (J.-L. Amiet in Frost, 1985, Amph. Species World: 17). See brief account in Laurent, 1972, Explor. Parc Natl. Virunga, Ser. 2, 22: 22-24. Frétey and Blanc, 2001, Bull. Soc. Zool. France, 126: 381, reported this species from Gabon. Lasso, Rial, Castroviejo, and De la Riva, 2002, Graellsia, 58: 21-34, provided notes on ecological distribution in Equatorial Guinea. Schiøtz, 1963, Vidensk. Medd. Dansk Naturhist. Foren., 125: 32, provided records for Nigeria. Blackburn, Kosuch, Schmitz, Burger, Wagner, Gonwouo, Hillers, and Rödel, 2008, Copeia, 2008: 603-612, redelimited the species to exclude what is now Cardioglossa occidentalis.
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