Atelopus pachydermus Schmidt, 1857

Thickskin harlequin toad, Schmidt's stubfoot toad



Taxonomy & Nomenclature

Synonym/s: Atelopus pachydermus Rivero, 1963; Phirix pachydermus Schmidt, 1857; Phryniscus pachydermus Hoffmann, 1878


Conservation Status

Last Record: 1994 or 1995 (Coloma, 2008)


IUCN status: Critically Endangered (Possibly Extinct)





Biology & Ecology




Holotype: KM 1013/1356






Original scientific description:

Schmidt, O. (1857). Diagnosen neuer Frösche des zoologischen Cabinets zu Krakau. Sitzungsberichte der Akademie der Wissenschaften in Wein [1857]: 10-15.


Other references:

Luis A. Coloma. (2008). Atelopus pachydermus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. ( Downloaded on 10 February 2013.

Coloma, Luis A., Lötters, S., Duellman, W.E., and Miranda-Leiva, A. (2007). A taxonomic revision of Atelopus pachydermus, and description of two new (extinct?) species of Atelopus from Ecuador (Anura: Bufonidae). Zootaxa 1557: 1-32. [Abstract]

Jaynes, Kyle E. et al. (2022). Harlequin frog rediscoveries provide insights into species persistence in the face of drastic amphibian declines. Biological Conservation 276: 109784.


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