The Dwarf Yellow-shouldered Bat is a small bat with long dorsal hairs, each bearing four color bands. It is known from montane forest in Ayacucho, Peru.
The dorsal fur is long and each hair is tetracolored. Long hairs sparsely cover the forearm, legs, feet, proximal wing segments and tail membrane.
It inhabits montane forest in Ayacucho, Peru.
The braincase is relatively long, with a narrow, sloping rostrum.
The upper premolar P3 is broad and contacts both the canine in front and the following premolar.
An extinction-risk assessment has not been added yet.