Eleutherodactylus calcarulatus Lynch, 1976, Occas. Pap. Mus. Nat. Hist. Univ. Kansas, 55: 6. Holotype: KU 111218, by original designation. Type locality: "Tandapi, Prov. Pichincha, Ecuador, 1460 m."
Eleutherodactylus (Eleutherodactylus) calcarulatus — Lynch, 1996, in Powell and Henderson (eds.), Contr. W. Indian Herpetol.: 154. Lynch and Duellman, 1997, Univ. Kansas Mus. Nat. Hist. Spec. Publ., 23: 221.
Pristimantis calcarulatus — Heinicke, Duellman, and Hedges, 2007, Proc. Natl. Acad. Sci. USA, Suppl. Inform., 104: Table 2.
Spurred Robber Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 73).
Cloud forests at moderate elevations on the western flank of the Cordillera Occidental from La Planada (Departamento Nariņo) in extreme southern Colombia, south in Ecuador to Cotopaxi Province, 1140-2700 elevation.
Probably most closely related to Eleutherodactylus frater, Eleutherodactylus ockendeni, and Eleutherodactylus taeniatus according to Lynch, 1976, Occas. Pap. Mus. Nat. Hist. Univ. Kansas, 55: 7. See account by Lynch and Duellman, 1997, Univ. Kansas Mus. Nat. Hist. Spec. Publ., 23: 74-75. In the Eleutherodactylus (Eleutherodactylus) martinicensis series, Eleutherodactylus unistrigatus group according to Lynch and Duellman, 1997, Univ. Kansas Mus. Nat. Hist. Spec. Publ., 23: 221. In the Pristimantis (Pristimantis) unistrigatus species group of Hedges, Duellman, and Heinicke, 2008, Zootaxa, 1737: 128. See photograph, map, description of geographic range and habitat, and conservation status (as Eleutherodactylus calcarulatus) in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 324.
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