This species is known from the western slopes of the Bolivian Andes. It was known initially from the type locality, approximately 0.25km east of the San Onofre road, 3.3km north of the road to Cochabamba-Tunari Village, in Chapare Province, Cochabamba Department, at 1,693m asl (Reynolds and Foster 1992). Gonzalez at al. (1999) then extended its distribution to western Bolivia, reporting it in the Reserva de la Biósfera y Terretorio Indígena de Pilón Lajas, and in the Yungas forest in La Paz Department. Only four populations of this species are currently known, two in the district of Cochabamba, and two in the northern district of La Paz.
Habitat and Ecology
It is a terrestrial species that inhabits the Yungas forest of Cochabamba and La Paz Districts (De la Riva et al. 2000). Köhler (2000a) found specimens to be common during the day in undisturbed montane forest. The larvae were described by Reynolds and Foster (1992), and develop in streams.
The current population trend is unknown, but it is very possibly declining. The population at the type locality is probably now extinct, and has not been seen despite several visits to the area.
Major threats to this species are agricultural development, road construction, and water pollution from agriculture.
It occurs in the Reserva de la Biósfera y Terretorio Indígena de Pilón Lajas and Parque Nacional Carrasco.
Claudia Cortez, Steffen Reichle, Ignacio De la Riva, Jörn Köhler 2004. Allobates mcdiarmidi. In: IUCN 2014