This species is patchily distributed in the high Andes in northern Colombia and western Venezuela. According to present forest distribution, the largest populations of M. bricenii should be located in the following Venezuelan national parks: El Tama National Park, between Táchira and Apure states; Páramos del Batallón National Park between Mérida and Táchira states; Sierra Nevada National Park between Barinas and Mérida states; Sierra de la Culata National Park in Mérida and Trujillo states; Guaramacal National Park also known as "General Cruz Carrillo" in the state of Trujillo, with a small portion located in the state of Portuguesa (Utrera 1999); and Dinira National Park located in Sierra de Barbacoas, in watersheds of Tocuyo river between Lara, Portuguesa and Trujillo states. Dinira and Guaramacal are probably the eastern most location of the species within Venezuela. Some populations might be expected outside protected areas in the hinterlands between Sierra Nevada and Páramos del Batallon national parks, an area known as Pueblos del Sur de Mérida, and between Guaramacal and Sierra Nevada national parks, known as Ramal de Calderas. In Colombia it is found in Tama national park in Norte de Santander state and possibly in Cocuy national park between Boyaca, Arauca and Casanare states. The southern distribution limit is unknown.