Eleutherodactylus rayo Savage and DeWeese, 1979, Bull. S. California Acad. Sci., 78: 107. Holotype: LACM 127669, by original designation. Type locality: "second sabana on the trail from Finca El Helechales to Sabanas Esperanza, 5 km, airline, east of Finca El Helechales, Canton de Buenos Aires, Provincia Puntarenas, Costa Rica, 1640 m."
Eleutherodactylus (Craugastor) rayo — Hedges, 1989, in Woods (ed.), Biogeograph. W. Indies: 317. by implication.
Craugastor rayo — Crawford and Smith, 2005, Mol. Phylogenet. Evol., 35: 551. by implication; Frost, Grant, Faivovich, Bain, Haas, Haddad, de Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 297: 360.
Craugastor (Craugastor) rayo — Hedges, Duellman, and Heinicke, 2008, Zootaxa, 1737: 37.
Sabana Robber Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 78).
Rainforests of the upper portion of the premontane and lower portion of the lower montane slope of the Pacific face of the Cordillera de Talamanca of southwestern Costa Rica, between 1600-1850 m.
In the Eleutherodactylus (Craugastor) fitzingeri group according to Lynch and Duellman, 1997, Univ. Kansas Mus. Nat. Hist. Spec. Publ., 23: 231. See account by Savage, 2002, Amph. Rept. Costa Rica: 243-244, who included this species in his Eleutherodactylus fitzingeri series, Eleutherodactylus fitzingeri group. In the Craugastor fitzingeri series, Craugastor melanostictus species group of Hedges, Duellman, and Heinicke, 2008, Zootaxa, 1737: 37.
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