Lynchius is a genus of frogs in the family Craugastoridae. The name honours herpetologist John D. Lynch. The distribution of Lynchius is restricted to the Cordillera Oriental in southern Ecuador and Cordillera de Huancabamba in northern Peru.
Taxonomy The genus is relatively new; it was split off from Phrynopus in 2008 in order to resolve the paraphyly of that genus. The sister taxon of Lynchius is Oreobates.
Description Lynchius are relatively small frogs (snout–vent length up to in Lynchius flavomaculatus) with a narrow head, not as wide as body. Skin is smooth.
Species The following species are recognised in the genus Lynchius: Lynchius flavomaculatus (Parker, 1938) Lynchius megacephalus Sánchez-Nivicela, Urgilés, Navarrete, Yánez-Muñoz, and Ron, 2019 Lynchius nebulanastes (Cannatella, 1984) Lynchius oblitus Motta, Chaparro, Pombal, Guayasamin, De la Riva, and Padial, 2016 Lynchius parkeri (Lynch, 1975) Lynchius simmonsi (Lynch, 1974) Lynchius tabaconas Motta, Chaparro, Pombal, Guayasamin, De la Riva, and Padial, 2016 Lynchius waynehollomonae Venegas, García Ayachi, Ormeño, Bullard, Catenazzi, and Motta, 2021
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