Descriptive Morphology of Male and Female Genitalia of the Long-horned Grasshopper in the Tribe Aphractini (Orthoptera: Tettigoniidae), with a Key to the Genera.

The male and female genital morphologies of the tribe Aphractini are presented in this study. Four species are included: Aphractus acuminatus, Paraphractus abbreviatus, Polycleptidella chilensis and Polycleptis scutellifera. A dichotomous key to the genera is provided. The lengths between the female spermathecal duct and titillatory articulated processes are similar within species but differ between them. Therefore, we propose that the function of these organs could be associated with the sperm removal strategy.