Pristimantis ridens (Cope, 1866)

Class: Amphibia > Order: Anura > Superfamily: Brachycephaloidea > Family: Strabomantidae > Subfamily: Pristimantinae > Genus: Pristimantis > Species: Pristimantis ridens

Phyllobates ridens Cope, 1866, Proc. Acad. Nat. Sci. Philadelphia, 18: 131. Type(s): USNM, lost, according to Savage, 1981, Proc. Biol. Soc. Washington, 94: 418. Type locality: "St. Juan River [= Río San Juan], Nicaragua".

Hypodictyon ridensCope, 1885 "1884", Proc. Am. Philos. Soc., 22: 383.

Syrrhopus ridensBoulenger, 1888, Proc. Zool. Soc. London, 1888: 206.

Syrrhaphus ridensGünther, 1900, Biol. Centr. Amer., Rept. Batr., Vol. 7, Part 155: 216.

Syrrhophus ridensNoble, 1918, Bull. Am. Mus. Nat. Hist., 38: 326; Nieden, 1923, Das Tierreich, 46: 401.

Syrrhopus molinoi Barbour, 1928, Proc. New England Zool. Club, 10: 28. Holotype: MCZ 13051, by original designation. Type locality: "Barro Colorado Island, Gatun Lake, Panama Canal Zone". Synonymy by Lynch, 1980, Herpetologica, 36: 180.

Eleutherodactylus lutosus molinoiDunn, 1931, Occas. Pap. Boston Soc. Nat. Hist., 5: 411.

Eleutherodactylus ridensTaylor, 1952, Univ. Kansas Sci. Bull., 35: 690.

Eleutherodactylus (Eleutherodactylus) ridensLynch, 1996, in Powell and Henderson (eds.), Contr. W. Indian Herpetol.: 154; Lynch and Duellman, 1997, Univ. Kansas Mus. Nat. Hist. Spec. Publ., 23: 231.

Pristimantis ridensHeinicke, Duellman, and Hedges, 2007, Proc. Natl. Acad. Sci. USA, Suppl. Inform., 104: Table 2.

Pristimantis (Hypodictyon) ridensHedges, Duellman, and Heinicke, 2008, Zootaxa, 1737: 114.

English Names

Rio San Juan Robber Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 78).


Atlantic lowlands of extreme eastern Honduras, Nicaragua, Costa Rica, and Panama; premontane evergreen forests of Costa Rica and Panama on both Atlantic and Pacific versants; lowlands of southwestern Costa Rica, and in the Pacific versant evergreen forests of Panama, and western Colombia (15-1800 m).

Geographic Occurrence

Natural Resident: Colombia, Costa Rica, Honduras, Nicaragua, Panama


In the Eleutherodactylus cruentus group, according to Savage, 1980, Prelim. Handlist Herptofauna Costa Rica: 6. In the Eleutherodactylus (Eleutherodactylus) martinicensis series, Eleutherodactylus unistrigatus group according to Lynch and Duellman, 1997, Univ. Kansas Mus. Nat. Hist. Spec. Publ., 23: 231. See accounts by Savage, 1981, Proc. Biol. Soc. Washington, 94: 413-420, Savage, 2002, Amph. Rept. Costa Rica: 269-271(who placed this species in his Eleutherodactylus martinicensis series, Eleutherodactylus cruentus group), and McCranie and Wilson, 2002, Amph. Honduras: 428-431 (who noted significant call differences among Honduran populations). Miyamoto, 1984, J. Herpetol., 18: 256-263, reported on relationships of this species if other members of the Eleutherodactylus cruentus group in Central America. McCranie, 2007, Herpetol. Rev., 38: 38, summarized the departmental distribution in Honduras. In the Pristimantis (Hypodictyon) ridens species series of Hedges, Duellman, and Heinicke, 2008, Zootaxa, 1737: 114. In the Pristimantis ridens species group of Padial, Grant, and Frost, 2014, Zootaxa, 3825: 126. Wang, Crawford, and Bermingham, 2008, Mol. Phylogenet. Evol., 47: 992-1004, reported on molecular phylogeography. See comments by Sunyer, Páiz, Dehling, and Köhler, 2009, Herpetol. Notes, 2: 189-202, regarding Nicaraguan populations. Köhler, 2011, Amph. Cent. Am.: 140–191, provided a key to the genera and species of Brachycephaloidea (= Craugastoridae, Eleutherodactylidae) in Central America and provided maps and photographs of the species, including this one.. Sunyer, Martínez-Fonseca, Salazar-Saavedra, Galindo-Uribe, and Obando, 2014, Mesoam. Herpetol., 1: 166, provided records for the department of Chontalesr, Nicaragua. Martínez-Fonseca, Holmes, Sunyer, Westeen, Grundler, Cerda, Fernández-Mena, Loza-Molina, Monagan, Nondorf, Pandelis, and Rabosky, 2024, Check List, 20: 67, provided and discussed a record from Refugio Bartola, Departamento Río San Juan, Nicaragua, 60 m elevation. 

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