AmphibiaWeb - Pristimantis colomai


(Translations may not be accurate.)

Pristimantis colomai (Lynch & Duellman, 1997)
family: Strabomantidae
genus: Pristimantis
Pristimantis colomai
© 2016 Andres Felipe Jaramillo (1 of 6)
Conservation Status (definitions)
IUCN Red List Status Account Vulnerable (VU)
National Status None
Regional Status None


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Pristimantis colomai has a head which is narrower than the body and slightly wider than it is long. Snout is subacuminate when viewed dorsally and protruding when viewed laterally (with an acuminate tip). Eye to nostril distance is 84.8-95% diameter of eyes. Nostrils are slightly protuberant and directed laterally. The loreal region is flat and slopes almost vertically to the lips. Upper eyelid and rest of head lacking tubercles. Cranial crests absent. Supratympanic fold is weak but obscures the dorsal rim of the tympanic annulus. Tympanic annulus round 32-38% diameter of eye; half diameter of tympanic annulus separates posterior eye from anterior annulus.

Coloration in life is brown dorsally to coppery brown with dark brown transverse bands and yellow dorsolateral lines. The thighs are olive-green with diagonal brown bars. The loreal region is brown and the tympanum ochre. Posterior surfaces of thighs dull yellow with a dark brown throat with chest, belly, and undersides of limbs red. Iris is bronze or brown above with red below. Skin on dorsum is smooth while venter is areolate. Discoidal fold is prominent and dorsolateral folds absent. Most easily confused with P. rosadoi in color patterns (in preservative), however P. colomai differs in its protruding snout, calcar on the heel, and lacks tubercles on the upper eyelid; also has a white mesorchium whereas it is black in P. rosadoi.

All discs bear broad ventral pads with complete circumferential grooves; nuptial pad is white and on median surface of thumb above joint with metacarpal. There is a diffuse darker pattern from the interocular region posterior to the postsacral region where it forms a vague X-shape.

Distribution and Habitat

Country distribution from AmphibiaWeb's database: Colombia, Ecuador

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Known from the humid subtropical area at elevations between 830 and 1200 m in the foothills of the Andes in northwestern Ecuador and southwestern Colombia.

Life History, Abundance, Activity, and Special Behaviors
Specimens were found on leaves of bushes 50-60 cm above ground in primary and secondary forest.

Possible reasons for amphibian decline

General habitat alteration and loss


Lynch, J. D. and Duellman, W.E. (1997). Frogs of the Genus Eleutherodactylus in Western Ecuador. The University of Kansas Natural History Museum, Lawrence, Kansas.

Originally submitted by: Raul E. Diaz (first posted 2004-12-14)
Edited by: Tate Tunstall (2007-12-01)

Species Account Citation: AmphibiaWeb 2007 Pristimantis colomai <> University of California, Berkeley, CA, USA. Accessed Jun 25, 2024.

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Citation: AmphibiaWeb. 2024. <> University of California, Berkeley, CA, USA. Accessed 25 Jun 2024.

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