Parameres - Similarities and Differences in Chrysomelidae and Cerambycidae (Coleoptera) 1

Parameres, or lateral lobes, of the male copulatory organ are present in many insect groups, while in others they are reduced or completely lacking. Nearly all long-horned beetles have parameres, while only the leaf beetle sub- taxa Megalopodinae, Zeugophorinae, Orsodacninae, Bruchidae, Sagrinae, Donaciinae and the genus Timarcha possess them. In these taxa, parameres can consist of one or two lobes, can be very long or quite short, and the...