Karyological Studies on Five Egyptian Species of Dictyoptera (Pterygota : Insecta)

Abstract

Chromosomes in five species of the order Dictyoptera Periplaneta americana, Blattella germanica, Supella supellectilium, Mantis religiosa and Sphadromantis bioculata have been studied. In Periplaneta americana (Family Blattidae), the diploid chromosome number of 32+XX in Females and 32+XO in males was observed, while the diploid chromosome number in the two species Blattella germanica and Supella supellectilium (Family Blattillidae) were 22+XX in female, 22 + XO males and 18+XX in females, 18+XO in males respectively. The diploid chromosome number for the two species Mantis religiosa and Sphadromantis bioculata (Family Mantidae) were determined to be 26+XX in females, 26+XO in males and 22+XX in females, 22+XO in males respectively. Karyotypic data for these five species had been studied in details. These results are reported for the first times in Egypt.