The São Tomé Leaf-nosed Bat is endemic to São Tomé Island. It is a large bat, with a record of several hundred individuals at an underground roost.
It has a forearm of about 85 mm and a weight of about 56 g, resembling a smaller version of the related M. gigas.
On São Tomé, a colony of several hundred was found at an underground roost, and one bat was observed roosting under palm leaves.
An extinction-risk assessment has not been added yet.