Two issid genera, IranodusDlabola, 1980 and CavatoriumDlabola, 1980, are redefined based on external morphological characters including male genitalia structure. A new genus, Irabolagen. nov., is erected to accommodate Hysteropterum repandumDlabola, 1981 (type species), Iranodus amygdalinusDlabola, 1980, and Cavatorium sarbazDlabola, 1980. As a result, following combinations are introduced: Irabola repanda (Dlabola, 1981), comb. nov., I. amygdalina (Dlabola, 1980), comb. nov., and I. sarbaz (Dlabola, 1980), comb. nov.Hysteropterum dumetorumDlabola, 1981 is transferred to the genus Cavatorium, with a new combination proposed – Cavatorium dumetorum (Dlabola, 1981), comb. nov. Illustrations of habitus and male genitalia are given for Cavatorium ardakanumDlabola, 1980, Irabola repanda (Dlabola, 1981), I. amygdalina (Dlabola, 1980), Iranodus khatunus (Dlabola, 1981), and I. transversalisDlabola, 1980.