Systematic revision and phylogenetic analysis of the South American genus Chlorus (Orthoptera, Acridoidea, Melanoplinae)

摘要

The South American grasshopper genus Chlorus (Melanoplinae, Dichroplini) from Bolivia, southern Brazil and Paraguay is revised. Cladistic analysis of morphological characters indicates that Chlorus constitutes a monophyletic group whose generic relationships remain unsolved. If the external morphology is considered, Chlorus showed to be related to Dichromatos, while characters from the male genitalia support the relationship between Chlorus and Eurotettix. Seven species are recognised for Chlorus with three of them described as new: Chlorus spatulus, Ch. chiquitensis and Ch. attenuatus. Keys to the species of the genus and a review of the morphological characters defining the taxa are provided.