G-, C-bands and NOR studies in two species of bats from Southern Brazil (Chiroptera: Vespertilionidae, Molossidae)

Described the karyotypes of two species of bats from Southern Brazil, Eptesicus brasiliensis (2n = 50; AN = 48) and Molossus molossus (2n = 48; AN = 54). The study of E. brasiliensis was based in seven males and seven females, while that of M. molossus included three males and 13 females. All autosomal chromosomes of E. brasiliensis are acrocentric, while M. molossus presents four pairs of submetacentric and 19 pairs of acrocentric chromosomes. Both species present an acrocentric Y chromosome; the X is submetacentric in E. brasiliensis and metacentric in M. Molossus