del Monte is believed to be primarily arboreal, though it
my take refuge underground when released from a trap. Nests
are small round structures made of sticks, leaves, mosses
and grasses and can occur under rocks, fallen trees, in tree
hollows, on branches or suspended in lianas. The head and
body length of Monito del Monte is 83-103mm, tail length is
90-132mm and weight is 16.7-31.4 grams. The fur is short,
silky and dense. Upper parts are mostly brown with ashy white
patches on the shoulders and rump. Underparts can be pale.
The semi-prehensile tail is furred but for a narrow strip
25-30mm long on the underside of the tip.
Monito del Monte lives mostly in pairs, at least during mating
season. Females have a small but distinct pouch and four mammae.
Litters of one to five young have been observed and develop
in four distinct stages: 1) in the pouch, attached to the
mammae, 2) in the nest, 3) nocturnal trips on the mother's
back, and 4) loose association with other family members.
Both males and females mature sexually in their second year.
entirely nocturnal, Monito del Monte feeds mainly on insects
and other small invertebrates. In
colder climates, Monito del Monte hibernates for lengthy periods
when resources are scarce. Accumulation of fat in the basal
part of the tail can more than double the weight of an individual
in one week.
are found in Chile and adjacent Argentina from about 36šS
to near 43šS.