Etude des caractéristiques biologiques de quelques espèces d’Orthoptères Caelifères dans la région de Ghardaïa

Abstract

This study is made in Ghardaia, which belongs to the Saharan bioclimatic stage with mild winter; our work is to study the biological characteristics of the most important species of Locusts in Beni Isguen station. Thanks the method of sweep net, the inventory of the fauna Orthoptèrologique shows the presence of 15 species. This biological study recognizes two types of species:  Species of one generation in a year such as Sphingonotus rubescens, Aiolopus strepens, Ochrilidia gracilis, Heteracris harterti and Truxalis nasuta.  Species with several generations in a year as Acrotylus patruelis and Pyrgomorpha cognata