We report a new karyotype for Macrophyllum macrophyllum, based on one specimen collected nearly 600 km from the type-locality in Bahia State, northeastern Brazil. The new karyotype is described and depicted with conventional Giemsa staining and C-banding. It is characterized by a diploid number (2n) of 34, a fundamental autosomal number (FNa) of 62, and a medium-sized metacentric X chromosome and a small submetacentric Y chromosome. Constitutive heterochromatin is distributed in pericentromeric bands in all chromosomes. Our findings are suggestive of a certain amount of karyotypic variation in the genus when contrasted with the single previous karyological report for M. macrophyllum, which recorded 2n = 32 and FNa = 56.
The karyotype of Macrophyllum macrophyllum (Schinz, 1821) (Phyllostomidae: Phyllostominae) from the state of Bahia, Brazil/ The karyotype of Macrophyllum macrophyllum (Schinz, 1821) (Phyllostomidae: Phyllostominae) from the state of Bahia, Brazil