Hyloxalus exasperatus (Duellman and Lynch, 1988)

Class: Amphibia > Order: Anura > Superfamily: Dendrobatoidea > Family: Dendrobatidae > Subfamily: Hyloxalinae > Genus: Hyloxalus > Species: Hyloxalus exasperatus

Colostethus exasperatus Duellman and Lynch, 1988, Proc. Acad. Nat. Sci. Philadelphia, 140: 129. Holotype: ANSP 29218, by original designation. Type locality: "'Yapitya,' 1700 m, on the trail from Logroño to Yaupi, west slope of the Cordillera de Cutucú, Provincia Morona-Santiago, Ecuador".

Hyloxalus exasperatusGrant, Frost, Caldwell, Gagliardo, Haddad, Kok, Means, Noonan, Schargel, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 299: 168.

Allobates exasperatus —  Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2:

Common Names

Exasperating Nurse Frog ( Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxi). 

Rana Nordriza Exasperante (Spanish: Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxi).

Yapitya Rocket Frog (Colostethus exasperatus: Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 48).

Distribution

Cloud forests at elevations of 1700–1853 m on the eastern slopes of the Cordillera del Condo and Kutukú in Pastaza and Morona Santiago provinces, Ecuador.

Geographic Occurrence

Natural Resident: Ecuador

Endemic: Ecuador

Comment

See account by Coloma, 1995, Misc. Publ. Mus. Nat. Hist. Univ. Kansas, 87: 31. See comment regarding diagnosis by Rivero and Almendáriz C., 1992 "1991", Rev. Politécnica, Quito, 16: 117. See comment under Hyloxalus parcusColoma and Duellman, 2025, Amph. Ecuador. Vol. 2: 23–24, provided an account (as Allobates exasperatus), with photographs, which summarized identification, adult and larval morphology, systematics, natural history, distribution (including a dot map for Ecuador), and conservation. They also transferred this species to Allobates on the basis of overall similarity, neglecting the synapomorphic black arm gland shared with Hyloxalus nexipus. The species is retained here in Hyloxalus pending molecular data or further discussion. 

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