MorphologyRead full entry
Pteropus vampyrus is one of the largest bats in the world. Forearm length ranges from 180 to 220 mm, mean wingspan is 1.5 m, and body mas ranges from 0.6 to 1.1 kg. It has long pointed ears and a dog-like or fox-like face and head. Pelage varies in color and texture with age and sex . Upper dorsal fur is short and stiff, with longer, woolier fur on the venter. Head and upper body are covered with a dark mantle ranging in color from mahogany-red to black, and the venter is often darker than the rest of the body. Its wings have short rounded tips. Except for parts close to the body and the edge of the wing membrane, wing membranes lack fur. Young are born with dark skin and fur but become paler as they develop. Males have thicker and stiffer pelage than females and glandular neck tufts with dark bases. Pteropus vampyrus is different from most Pteropus in that it has darker underparts and a dark mantle. For example, P. giganteus and P. lylei have pale underparts that contrast with the darker dorsal pelage. Pelage color occasionally varies as a few P. vampyrus specimens have lighter mantles, and some have a gray or silver venter.
Large flying foxes have robust skulls, with a nearly complete orbit and a thick, wide zygomatic arch. The postorbital processes reaches more than halfway to the zygomatic arch. The dental formula is 2/2, 1/1, 3/3, 2/3 for a total of 34 teeth. Upper canines have a prominent anterior groove and a smaller groove on the inner surface.
Range mass: 0.6 to 1.1 kg.
Average wingspan: 1.5 m.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: male larger; sexes colored or patterned differently