Lynchius simmonsi (Lynch, 1974)

Class: Amphibia > Order: Anura > Superfamily: Brachycephaloidea > Family: Strabomantidae > Subfamily: Pristimantinae > Genus: Lynchius > Species: Lynchius simmonsi

Ischnocnema simmonsi Lynch, 1974, J. Herpetol., 8: 85. Holotype: KU 147068, by original designation. Type locality: "Río Piuntza, Cordillera del Condor, Morona-Santiago Prov., Ecuador, 1830 m".

Oreobates simmonsiCaramaschi and Canedo, 2006, Zootaxa, 1116: 51.

Lynchius simmonsi — Padial, Chaparro, Castroviejo-Fisher, Guayasamin, Lehr, Delgado C., Vaira, Teixeira, Aguayo-Vedia, and De la Riva, 2012, Am. Mus. Novit., 3752 : 2. 

English Names

Simmons' Big-headed Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 81).


Known from the Cordillera del Condor in Morona-Santiago and Zamora-Chinchipe Provinces, Ecuador; presumably extending into adjacent Amazonas, Peru.

Geographic Occurrence

Natural Resident: Ecuador

Likely/Controversially Present: Peru

Endemic: Ecuador


See accounts by Padial, Chaparro, and De la Riva, 2008, Zool. J. Linn. Soc., 152: 764, and Motta, Chaparro, Pombal, Guayasamin, De la Riva, and Padial, 2016, Herpetol. Monogr., 30: 131–132, who suggested its eventual discovery in Peru. 

External links:

Please note: these links will take you to external websites not affiliated with the American Museum of Natural History. We are not responsible for their content.