Pipistrellus hesperus (H. Allen, 1864) . Smithson. Misc. Coll., 7:43.
REVIEWED BY: B. Villa-Ramirez (BVR).
TYPE LOCALITY: U.S.A., California, Imperial Co., Old Fort Yuma .
DISTRIBUTION: Washington to S.W. Oklahoma (U.S.A.), and Baja California, south to Hidalgo and Guerrero (Mexico).
ISIS NUMBER: 5301405014019018001.