Chiasmocleis bassleri 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Microhylidae

Scientific Name: Chiasmocleis bassleri Dunn, 1949
Common Name(s):
English Bassler's Humming Frog
Syncope bassleri de Sá, Streicher, Sekonyela, Forlani, Loader, Greenbaum, Richards, and Haddad, 2012
Taxonomic Source(s): Frost, D.R. 2016. Amphibian Species of the World: an Online Reference. Version 6.0 (31 October 2016). New York, USA Available at:

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Needs updating
Assessor(s): Javier Icochea, Claudia Azevedo-Ramos, Luis A. Coloma, Santiago Ron
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Listed as Least Concern in view of its wide distribution, tolerance of a degree of habitat modification, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

Geographic Range [top]

Range Description:This species is known from eastern Amazonian Perú (Departamentos: Huánuco, Loreto, Madre de Dios, Ucayali), eastern Ecuador, and western Brazil (Acre, Rondonia and surrounding areas). It is present in southern Colombia (Acosta Galvis, 2000). It occurs in northern Bolivia (De la Riva et al, 2000; Steffen Reichle pers comm.). It has been recorded up to elevations of 300m asl.
Countries occurrence:
Bolivia, Plurinational States of; Brazil; Colombia; Ecuador; Peru
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is abundant in terra firma primary forest.
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It lives in holes, leaf-litter, and ponds and swamps in terra firma primary and secondary tropical rainforest and in seasonally flooded forest. It is usually fossorial but has been found in bushes. Breeding occurs in marshy areas; larval development takes place in these areas. It is not known if it occurs in degraded areas.
Systems:Terrestrial; Freshwater

Threats [top]

Major Threat(s): It is generally a widespread species with large areas of suitable habitat remaining. There is some localized habitat loss to general human activities such as collection of wood, logging, agriculture (crops, livestock etc.) and colonization.

Conservation Actions [top]

Conservation Actions: It occurs in several protected areas (including Parque Nacional Manu, Pacaya Samiria Reserve, Bahuaja-Sonene National Park in Peru; and the Reserva Biológica Limoncocha, and Parque Nacional Yasuní in Ecuador.)

Citation: Javier Icochea, Claudia Azevedo-Ramos, Luis A. Coloma, Santiago Ron. 2004. Chiasmocleis bassleri. The IUCN Red List of Threatened Species 2004: e.T57751A11680452. . Downloaded on 19 April 2018.
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