Karyotypic Analysis of Two Grasshopper Species Chrotogonus trachypterus trachypterus and Colemania sphenarioides (Orthoptera: Phyrgomorphidae)

Abstract

The morphology and mitotic karyotype of two species of Phyrgomorphidae, i.e., Chrotogonus trachypterus trachypterus and Colemania sphenarioides, collected from Chandoli National Park were studied. The mitotic karyotype of these species were prepared from testis and were stained with acetocarmine by conventional method. The result showed that the chromosome number of the two species are similar with 2n=19 (18+XO) in male and 2n=20 (18+XX) in female. The karyotype formula of Chrotogonus trachypterus trachypterus is L^t2+M^t5+S^t2 and that of Colemania sphenarioides is L^t3+M^t4+S^t2.