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.
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.
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.
Luis A. Coloma, Santiago Ron 2004. Colostethus jacobuspetersi. In: IUCN 2014