The eastern pipistrelle, _Pipistrellus subflavus_ (Cuvier) in the western part of its range, occurs along the Río Grande and its tributaries as far west as northern Coahuila and Val Verde County, Texas. Specimens from those places represent a heretofore undescribed subspecies which may be named and described as follows: #Pipistrellus subflavus clarus new subspecies# _Type._–Female, […]