© 2009 Eduardo Boza Oviedo (1 of 3)
Diagnosis: Small salamander with completely webbed digits. Varies in coloration from nearly uniform black dorsum to dull orange dorsum and dorsal surface of tail (Savage 2002).
Description: Adults measure 54 to 76 mm in total length. Adult males measure 28 to 36 mm. in standard length, while adult females masure 30 to 37 mm in standard length. Tail length is moderately long, about 47 to 53% of standard length. Eyes are moderately large and slightly protuberant. There are 34 to 55 maxillary teeth in adults, and 15 to 40 vomerine teeth. In adult males, there are 1/2 to 2 costal folds between adpressed limbs, while in adult females, there are 2 to 4. Hands and feet are completely webbed, with subterminal pads present. Head width is 15 to 16% of standard length. In adult males, leg length is 21 to 24% of standard length, while in adult females, leg length is 25 to 27% of standard length (Savage 2002).
It varies in color from being nearly completely black (or dark brown) dorsally, to a dull orange dorsum plus dull orange on the dorsal surfaces of the tail. Alternatively there may be a light brown field bordered by dark brown or black longitudinal stripes on each side. Venter is dark brown or black or spotted yellow and dark brown. Iris is pale brown (Wake et al. 1973).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Costa Rica, Panama
Life History, Abundance, Activity, and Special Behaviors
Trends and Threats
Possible reasons for amphibian decline
General habitat alteration and loss
A Spanish-language species account can be found at the website of Instituto Nacional de Biodiversidad (INBio).
Savage, J. M. (2002). The Amphibians and Reptiles of Costa Rica. University of Chicago Press, Chicago and London.
Solís, F., Ibáñez, R., Savage, J., Wake, D., Chaves, G., and Bolaños, F. (2008). Bolitoglossa minutula. In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.1. www.iucnredlist.org. Downloaded on 14 May 2010.
Wake, D. B., Brame, A. H. and Duellman, W. E. (1973). ''New species of salamanders, genus Bolitoglossa, from Panama.'' Natural History Museum of Los Angeles County - Contributions in Science, 248, 1-19.
Written by David Chen (davidchen AT berkeley.edu), University of California, Berkeley
First submitted 2009-11-02
Edited by Kellie Whittaker (2010-05-13)
Species Account Citation: AmphibiaWeb 2010 Bolitoglossa minutula <http://amphibiaweb.org/species/3991> University of California, Berkeley, CA, USA. Accessed Nov 16, 2018.
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Citation: AmphibiaWeb. 2018. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 16 Nov 2018.
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