| Allobates undulatus | |
|---|---|
| Conservation status | |
 Vulnerable (IUCN 3.1) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Anura |
| Family: | Aromobatidae |
| Genus: | Allobates |
| Species: | A. undulatus |
| Binomial name | |
| Allobates undulatus (Myers [fr] and Donnelly, 2001) | |
| Synonyms | |
|
Colostethus undulatus Myers and Donnelly, 2001 | |
Allobates undulatus is a species of frog in the family Aromobatidae. It is endemic to Venezuela where it is only known from its type locality, Cerro Yutajé, in the Amazonas state. The specific name undulatus refers to the characteristic wavy-edged dorsal marking of this species.
Description
Adult males measure 20–22 mm (0.8–0.9 in) and adult females 20–25 mm (0.8–1.0 in) in snout–vent length. The head is little wider than the body. The snout is sloping, rounded in profile and broadly rounded in dorsal and ventral views. The tympanum is rather inconspicuous and is concealed dorsally and posteriorly by a diffuse supratympanic bulge. The fingers have moderately expanded discs. The toes have weakly to moderately expanded discs some basal webbing between the toes (only distinct between toes II–III). The dorsum is orangish brown, with a usually prominent, wavy-edged, darker brown or grayish brown figure. The face mask is black, continuing and widening behind the eye to become a broad lateral stripe. The arms are pale orange. The upper sides of thighs and shanks are brown (or shanks are brown and thighs are orange), with darker brown crossbands; the posterior thigh surface is either brown with an orange suffusion or overall bright orange.
Habitat and conservation
Allobates undulatus is diurnal, terrestrial frog found in mossy gallery forest. Scientists know it exclusively from its type locality in Cerro Yutajé, at an elevation of about 1,750 m (5,740 ft) above sea level. Its range is within the Formaciones de Tepuyes Natural Monument protected area.
Reproduction
Scientists believe the tadpoles develop in streams, like those of other frogs in Allobates.
Threats
The IUCN classifies this frog as vulnerable to extinction. Its principal threats are habitat fragmentation, climate change, and disease. Because of the frog's small known range, any drastic changes in temperature or precipitation could wipe it out, either by killing adults directly or by interfering with reproductive conditions. Because the frogs all live in one place, a pathogen could affect the entire population. Habitat fragmentation is also a noted threat.
References
- ^ Ballestas, O. (2022). "Allobates undulatus". IUCN Red List of Threatened Species. 2022: e.T55161A198635887. doi:10.2305/IUCN.UK.2022-1.RLTS.T55161A198635887.en. Retrieved January 3, 2025.
- ^ Myers, Charles W. & Donnelly, Maureen A. (2001). "Herpetofauna of the Yutajé-Corocoro massif, Venezuela: second report from the Robert G. Goelet American Museum-Terramar Expedition to the northwestern tepuis". Bulletin of the American Museum of Natural History. 261: 1–85. doi:10.1206/0003-0090(2001)261<0001:HOTYCM>2.0.CO;2. hdl:2246/1329.
- ^ Frost, Darrel R. (2019). "Allobates undulatus (Myers and Donnelly, 2001)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 20 December 2019.
- Barrio-Amorós, C. L.; Rojas-Runjaic, F. J. M. & Señaris, J. C. (2019). "Catalogue of the amphibians of Venezuela: Illustrated and annotated species list, distribution, and conservation" (PDF). Amphibian and Reptile Conservation. 13 (Special Section): 1–198.
- "Allobates undulatus (Myers & Donnelly, 2001)". AmphibiaWeb. University of California, Berkeley. Retrieved January 3, 2025.
| Taxon identifiers | |
|---|---|
| Allobates undulatus | |