Description
Edalorhina nasuta is a small, brown, South American frog which has a leaf-like cryptic appearance. Snout-vent length ranges from 32 - 38 mm. The warts on the back form an “X” shape. The snout has a sharp, fleshy projection on the front. Vomerine teeth are present. Toes are slightly webbed; first and second fingers with equal length (Boulenger 1912; Dunn 1949).

Edalorhina nasuta can be distinguished from its sister taxon E. perezi by the shape and characters of the head. Edalorhina nasuta has a long, pointed, fleshy snout and weakly pronounced eyelid tubercles, while E. perezi has a short, rounded snout and very prominent tubercles on the upper eyelid (Duellman and Morales 1990). Edalorhina nasuta also has a different patterning on its back, with the warts forming an “X” pattern as opposed to parallel lines (if warts are present) in E. perezi (Dunn 1949).

Distribution and Habitat

Country distribution from AmphibiaWeb's database: Peru

View distribution map in BerkeleyMapper.

Edalorhina nasuta is found in central Peru, in Huancabamba, Pasco Department, and Huánuco Department. Its elevational range is 220 - 1000 meters above sea level (Angulo et al. 2004).

Life History, Abundance, Activity, and Special Behaviors

Edalorhina nasuta is terrestrial, inhabiting the leaf litter of lowland rainforests. The species is rarely seen by humans, so little is known about its life history. Based on its close relation to E. perezi, it is likely that E. nasuta deposits its eggs in foam nests alongside the edges of ponds (Angulo et al. 2004).

Trends and Threats
The main threat to E. nasuta populations is habitat modification for agricultural use. However, the species may occur in the Indigenous Peoples' Reserve “Reserva Comunal El Sira”, affording it some protection (Angulo et al. 2004).

Possible reasons for amphibian decline

General habitat alteration and loss
Habitat modification from deforestation, or logging related activities
Intensified agriculture or grazing

Comments

The species authority for E. nasuta is George Albert Boulenger, 1912 (Boulenger 1912; Angulo et al. 2004).

The species epithet, “nasuta,” is Latin for "long-nosed".

Edalorhina nasuta is the sister taxon to E. perezi, the only other member of Edalorhina. The closest relatives of the genus, Edalorhina, are the genera Physalaemus and Pleurodema (Lourenço et al. 2000).

The two specimens use to describe E. nasuta in Duellman and Morales (1990) were collected in 1922.

References

Angulo, A., Salas, A., and Icochea, J. (2004). Edalorhina nasuta. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. www.iucnredlist.org. Downloaded on 04 March 2013.

Boulenger, G. A. (1912). ''Descriptions of new Batrachians from the Andes of South America, preserved in the British Museum.'' The Annals and Magazine of Natural History, Series 8, 10(56), 185-191.

Duellman, W. E., and Morales, V. R. (1990). ''Variation, distribution, and life history of Edalorhina perezi (Amphibia, Anura, Leptodactylidae).'' Studies on Neotropical Fauna and Environment, 25(1), 19-30.

Dunn, E. R. (1949). ''Notes on the South American Frog Genus Edalorhina.'' American Museum Novitates, (1416).

Lourenço, L. B., Cardoso, A. J., Recco-Pimentel, S. M. (2000). ''Cytogenetics of Edalorhina perezi (Anura, Leptodactylidae).'' Cytologia, 65, 359-363.

Species Account Citation: AmphibiaWeb 2013 Edalorhina nasuta: Common Snouted Frog <https://amphibiaweb.org/species/3306> University of California, Berkeley, CA, USA. Accessed Oct 11, 2024.

Citation: AmphibiaWeb. 2024. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 11 Oct 2024.

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