Graph showing the difference in karyotype in five species of Reduviidae, based on the decrease in chromosome size. SC indicates the position of the sex chromosomes of similar size, LSC points to the large sex chromosome, SSC shows the small sex chromosome, and FSC indicates the fragmented sex chromosomes. Note that Montina confusa displays the karyotype with a great sized variation among the five species analyzed, and Apiomerus lanipes is the only species with sex chromosomes of intermediate size relative to the autosomes.