Taxonomic Significance of External Genitalia in Differentiating four Species of Genus Carbula St l (Heteroptera: Pentatomidae) from North India

The male and female external genitalia of four species belonging to the genus Carbula St l i.e. scutellata Distant, socia (Walker), biguttata (Fabricius) and insocia (Walker) have been studied in detail. The work includes the descriptions and detailed illustrations of external male and female genitalic structures which have not been published so far for these species. A key to the studied species is also given with emphasis on the genitalic characters.