Allobates undulatus is a species of frog in the family Aromobatidae. It is endemic to Venezuela where it is only know 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 and adult females 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 at an elevation of about above sea level. It is a common species within its limited range. The threats to this species are unknown. Its range is within the Formaciones de Tepuyes Natural Monument. References undulatus Frogs of South America Amphibians of Venezuela Endemic fauna of Venezuela Amphibians described in 2001 Taxa named by Maureen Ann Donnelly Taxa named by Charles W. Myers Taxonomy articles created by Polbot Amphibians of the Tepuis