Atopophrynus syntomopus Lynch & Ruíz-Carranza, 1982

Sonson frog



Taxonomy & Nomenclature



Conservation Status


Last record: before 1982

IUCN RedList status: Critically Endangered


This species is almost certainly extinct, at least at the type and thus far only known location, since "at least a dozen surveys of the type locality" have failed to rediscover this species (Castro & Lynch, 2004). The only hope of rediscovery now seems to be finding a relictual population outside of the type locality.



Antioquia, Colombia


Biology & Ecology




Only known from three specimens, the holotype plus two paratopotypes (Myers & Ford, 1986; Castro & Lynch, 2004).


AMNH 122260 [ex ICN 8612]
ICN 8613






Original scientific description:

Lynch, J. D. and Ruiz-Carranza, P. M. (1982). A new genus and species of poison-dart frog (Amphibia: Dendrobatidae) from the Andes of northern Colombia. Proceedings of the Biological Society of Washington 1982: 557-562.


Other references:

Fernando Castro and John Lynch. (2004). Atopophrynus syntomopus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.1. ( Downloaded on 22 October 2011.

Myers, C. W. and Ford, L. S. (1986). On Atopophrynus a recently described frog wrongly assigned to the Dendrobatidae. American Museum Novitates, no. 2843. 15 pp.


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