Chiasmocleis bassleri Dunn, 1949

Class: Amphibia > Order: Anura > Family: Microhylidae > Subfamily: Gastrophryninae > Genus: Chiasmocleis > Species: Chiasmocleis bassleri

Chiasmocleis bassleri Dunn, 1949, Am. Mus. Novit., 1419: 9. Holotype: AMNH 42699, by original designation. Type locality: "Rio Utoquinia to Rio Tapiche, Peru (near the Brazilian border)". Peloso, Sturaro, Forlani, Gaucher, Motta, and Wheeler, 2014, Bull. Am. Mus. Nat. Hist., 386: 37, discussed ambiguities surrounding the type locality. 

Syncope bassleride Sá, Streicher, Sekonyela, Forlani, Loader, Greenbaum, Richards, and Haddad, 2012, BMC Evol. Biol., 12(241): 1-21.

Chiasmocleis bassleriPeloso, Sturaro, Forlani, Gaucher, Motta, and Wheeler, 2014, Bull. Am. Mus. Nat. Hist., 386: 18. 

Chiasmocleis (Syncope) bassleri — de Sá, Tonini, van Huss, Long, Cuddy, Forlani, Peloso, Zaher, and Haddad, 2018 "2019", Mol. Phylogenet. Evol., 130: 203. 

English Names

Bassler's Humming Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 88).


Amazonian Colombia, Ecuador, Peru, the provinces of Acre, Rondônia, and northwestern Mato Grosso in Brazil, and San Sebastian, extreme nothern Bolivia.


Possible occurrence in Bolivia mentioned by De la Riva, Köhler, Lötters, and Reichle, 2000, Rev. Esp. Herpetol., 14: 51. Duellman, 1978, Misc. Publ. Mus. Nat. Hist. Univ. Kansas, 65: 188–189, provided a brief account. Rodríguez and Duellman, 1994, Univ. Kansas Mus. Nat. Hist. Spec. Publ., 22: 74, provided a brief account for the Iquitos region of northeastern Peru. Peloso and Sturaro, 2008, Zootaxa, 1947: 40, suggested that because the holotype is in poor condition and the type locality vague that application of this name to a particular living populations may be problematic. Morales and McDiarmid, 2009, Biotempo, Lima, 9: 74, suggested that the specimens reported from Santa Cecilia, Ecuador, and Iquitos, Peru, show distinctive characteristics that may suggest that these populations are not referrable to Chiasmocleis bassleri. Rodrigues, Noronha, Lima, and Rosa, 2011, Check List, 7: 846-848, provided a range extension and a spot map. Peloso, Sturaro, Forlani, Gaucher, Motta, and Wheeler, 2014, Bull. Am. Mus. Nat. Hist., 386: 37–42, provided an account and placed this species in the Chiasmocleis bassleri clade.  Gonzales-Álvarez and Reichle, 2004, Rev. Boliviana Ecol. Conserv. Ambiental, 15: 93–96, provided a record for San Sebastián, Bolivia. 

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