Based on analysis of more than fifty species of neotropical grasshoppers with a neo XY sex determining mechanism, the authors suggest that species acquiring such mechanisms are finally extinct at the end of a relatively ...

Dichroplus obscurus Bruner, 1900 is closely allied to other eight species (D. conspersus, D. maculipennis, D. pratensis, D. porteri, D. robustulus, D. silveiraguidoi, D. vittatus and D. vittiger) that conform the Maculipennis ...