: Eupsophus migueli is a generally small frog, roughly about 36 mm in snout-vent length. The skin on the dorsum and venter is smooth. It has a sharp canthus rostralis, a slightly pointed snout and sloping lores. The tympanic membrane is distinct. Forelimbs and hindlimbs are thin. The inner metatarsal tubercle is well developed, while the outer is small (Formas 1978).
Coloration: The dorsum is grayish black with two dark paravertebral areas that run to the tip of the head. The ventral side is a dark wine color with irregular white spots. The iris has a bronze yellow top half and brown lower half (Formas 1978).
Variation: Individuals vary in coloration pattern and have either a green olive dorsum or a grey dorsum. Some may have a lighter vertebral line running from snout to vent or exhibit a dark hour-glass pattern, especially on those with an olive background. Spots on the venter also vary in size (Formas 1978).
Diagnosis: E. migueli can be distinguished from E. roseus by its iris coloration and wine coloured belly. E. roseus has a transparent belly and the upper half of the iris is orange. From other species of the genus, it is distinguished by its coloration pattern. It has a notched xiphosternum, which is not present in other Chilean species of this genus (Formas 1978).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Chile
E. migueli is restricted to localities in the coastal province of Valdivia, Chile, specifically in the areas of Mehuín, Los Molinos and San José de la Mariquina, between 50 m and 80 m in altitude (Stuart et al. 2008).
It was abundant in the 1970’s, but now the species has been designated as Endangered. E. migueli can be found under logs close to forest streams in temperate Nothofagus forest (Stuart et al. 2008).
Life History, Abundance, Activity, and Special Behaviors
E. migueli utilizes small pockets of water in hillsides to breed and lay eggs. The larvae develop within the pockets of water (Stuart et al. 2008).
Males emit a mating call during breeding season (Formas 1978).
E. migueli is described as a generalist carnivore. It feeds on insects, worms, plants and inorganic materials (Formas 1978).
Trends and Threats
The major threat to E. migueli is habitat loss due to clear-cutting and cattle ranching (Stuart et al. 2008).
It does not occur in any protected areas, and there is an urgent need for formal protection of the Nothofagus forest in its range. Further survey work is also needed to determine whether this species occurs outside the vicinity of the type locality (Stuart et al. 2008).
Possible reasons for amphibian decline
Habitat modification from deforestation, or logging related activities
Intensified agriculture or grazing
E. migueli is named for the species author’s son (Formas 1978).
Its chromosome number is 2n=30 (Formas 1978).
Formas, R. (1978). ''A new species of leptodactylid frog ( Eupsophus) from the coastal range in Southern Chile.'' Studies on Neotropical Fauna and Environment , 13, 1-9.
Stuart, S., Hoffmann, M., Chanson, J., Cox, N., Berridge, R., Ramani, P., and Young, B. (eds) (2008). Threatened Amphibians of the World. Lynx Edicions, IUCN, and Conservation International, Barcelona, Spain; Gland, Switzerland; and Arlington, Virginia, USA.
Written by Spencer J. Mennis, Mingna (Vicky) Zhuang (Lyfshackle AT hotmail.com), CSU Stanislaus
First submitted 2011-06-23
Edited by Mingna (Vicky) Zhuang (2012-04-05)
Species Account Citation: AmphibiaWeb 2012 Eupsophus migueli: Miguel's Toad <http://amphibiaweb.org/species/2629> University of California, Berkeley, CA, USA. Accessed Oct 19, 2017.
Feedback or comments about this page.
Citation: AmphibiaWeb. 2017. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 19 Oct 2017.
AmphibiaWeb's policy on data use.