The North American Cerylonidae (Coleoptera: Clavicornia)

Abstract

appendix longer than the terminal segment, the tarsungulus bears a single seta, and the spiracles are annular. In the more generalized forms, such as ztnommatus, Murmidius, and the Euxes.tinae, the head is prognathous or somewhat inclined, and the mouthparts are of the normal clavicorn type, with a chewing, mola-bearing mandible and a short, blunt mala. In the Ceryloninae, however, the head is strongly hypognathous or opisthognathous, and the mouthparts torm a highly modified piercing apparatus, in which both mandible and the mala are elongate and blade-like.