Ultrastructure of spermatogenesis in the white-lined broad-nosed bat, Platyrrhinus lineatus (Chiroptera: Phyllostomidae)

► The acrosome of P. lineatus is formed by two different types of proacrosomal vesicles. ► The ultrastructure of the spermatozoon was different from other bats already studied. ► The ultrastructure of the spermatozoon shows a pattern more closely related to humans.