Chromosomes and Their Meiotic Behavior in Two Species of Stenopodainae (Heteroptera: Reduviidae)

抄録

Reduviids comprise the largest family of predaceous land Heteropterans and are characterized by a modal autosomal diploid number of 20 with both simple and multiple sex chromosome systems. Multiple systems are more frequent in Harpactorinae and Stenopodainae. Microchromosomes are invariably absent in this family. Stenopodainae have a diploid autosomal number of 20/22 (n=10A/11A) plus different multiple sex chromosome systems (XnY/XnXn). In the present work the chromosome complement and course of meiosis of two species viz. Oncocephalus notatus (2n=23=20A+X₁X₂Y) and Sastrapada baerensprungi (2n=23=20A+X₁X₂Y) (Stenopodainae) collected from the Punjab region of India and new to the cytogenetic world, are described.