Family Vespertilionidae
Eptesicus dutertreus Gervais, 1837
Figure 5A
Materials Examined. PUERTO RICO – Arecibo • Mata de Plátano Field Station and Nature Reserve; 18.414, -66.729; 151 m above sea level; Justin Matthew Bernstein, Camilo Andrés Calderón-Acevedo, Pedro Ivo Mônico, Lázaro Willian Viñola-Lopez, J. Angel Soto-Centeno; captured in six-meter mist net in open field 75 m south of field station between 6:45 PM and 8:30 PM; 1 ♂, ASC 1483.
Identification. The identity of Greater Antillean serotine bats (E. dutertreus ) was confirmed by their characteristically dark chocolate brown fur, and fully naked nearly black round ears, wing, and tail membranes. Both the tail and wing membranes look oily. The rostrum of Greater Antillean serotines is naked and wide, giving it an appearance of being inflated, a trait not found in other bats in Puerto Rico. These bats are fast fliers that forage above the canopy of trees. Our capture of Greater Antillean serotine bats in a forest corridor using understory mist nets is attributed to the presence of Cueva Larvas that serves as a roost nearby.