Hyloxalus jacobuspetersi
family: Dendrobatidae
subfamily: Hyloxalinae

© 2010 Division of Herpetology, University of Kansas (1 of 2)

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Anfibios del Ecuador

Conservation Status (definitions)
IUCN (Red List) Status Critically Endangered (CR)
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: Ecuador


View distribution map using BerkeleyMapper.


From the IUCN Red List Species Account:


Range Description

This species was known from the inter-Andean valleys of Guayllabamba, Toachi, Chimbo, and Cañar, and on the western slopes of the Andes in northern and central Ecuador, where it occupied areas between 1,500 and 3,800m and was known from more than ten localities.

Habitat and Ecology

It lives in mid- to high-elevation humid montane forest (Coloma 1995). It lays its eggs on the ground, and males carry the eggs to small streams for development.


There are no records of this species since the 1960s. Bustamante (2002) provides data of its absence at Bosque Protector Cashca Totoras (Provincia Bolívar), where it used to be a common frog. It is possible that undetected relict populations might still survive.

Population Trend


Major Threats

The primary threat to this species is habitat destruction and degradation due to agriculture, clear cutting, and human settlement; virtually no habitat remains where this species used to occur. Invasive alien species are also a threat.

Conservation Actions

The distribution range of the species overlaps Reserva Ecológica Los Illinizas, Reserva Geobotánica Pululahua, and Reserva de Producción Faunística Chimborazo. Surveys are urgently required to determine the population status and continued persistence of this species.

Red List Status

Critically Endangered (CR)


Listed as Critically Endangered because its Area of Occupancy is probably less than 10km2, its distribution is severely fragmented, and there is a continuing decline in its Extent of Occurrence, in its Area of Occupancy, in the extent and quality of its habitat, in the number of locations, and in the number of mature individuals.


Luis A. Coloma, Santiago Ron 2004. Colostethus jacobuspetersi. The IUCN Red List of Threatened Species 2004: e.T55098A11241853.


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