Telmatobius marmoratus (Dumeril & Bibron, 1841)
Class: Amphibia > Order: Anura > Family: Telmatobiidae > Genus: Telmatobius > Species: Telmatobius marmoratus
Marbled Water Frog
Listed as Vulnerable because of a population decline, projected to be more than 30% over the next 10 years, inferred from the potential impact of chytridiomycosis on the sub-populations of this species, from the effects of over-harvesting, and from a deterioration in habitat quality as a result of water pollution.
(1) Snout-vent length of males to 66.5 mm, females to 64.6 mm; (2) head in lateral profile moderately depressed, with rounded snout; (3) snout rounded or slightly subacuminate in dorsal view; (4) lips flared; (5) postcommisural gland present or absent; (6) tympanum not visible; supratympanic fold present; (7) forelimb of males normal, withno humeral spine; (8) nuptial spicules small, closely arranged; nuptial pad covering most of inner palmar tubercle; (9) foot webbing extending about 1/3 of toe lengths; plantar surface smooth or rugose but without queratinized spicules; (10) tarsal fold present; (11) dorsal skin variable, usually covered with small pustules; baggy skin on posterior surface of thighs; (12) dorsum variable, from beige or greenish-brown to dark brown with small black flecks or irregular blotches; (13) venter and ventral surfaces of limbs gray or cream; (14) iris brown with black flecks.
This species has the broadest distribution of any Telmatobius species. It is known from the Andean region of southern Peru, northern and central Bolivia and northern Chile. It is recorded in Peru from the Lake Titicaca and Cusco areas (Cusco and Puno Regions), with uncertain records from Ayacucho (not mapped). In Bolivia, it is recorded from the departments of La Paz, Oruro, and the highlands of Cochabamba. It is present in the altiplano of northern Chile (Parinacota, Lauca River, and Chungara Lake, Parinacota Province), and its range has recently been extended southwards to Cancosa (Tarapacá region; Sáez et al. 2014). It is also recorded from three localities in Argentina (Jujuy Province on the Bolivian border), although the taxonomic status of these specimens is unclear. It occurs from 1,800-5,244 m asl.
Bolivia, Chile, Peru
It is a riparian, semi-aquatic frog of streams, waterfalls and slow moving water in montane grasslands and shrublands. It can be found at the edge of the lake, in streams and ponds created by deglaciation, and bogs. Breeding takes place in small lakes, streams and rivers with good water quality. It has also been observed to reproduce in both wet and dry seasons, using high elevation bogs (R. Santa Cruz pers. comm. July 2015).
Bolivia Red Book: Vulnerable
Water quality and habitat:
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