A study on the Morphology of Antenna and Aedeagus in Males ofAulacophoraChevrolat (Coleoptera: Chrysomelidae: Galerucinae)

In the males of species of Aulacophora Chevrolat (Coleoptera: Chrysomelidae) antennae are sometimes morphologically different. Relationships between such modified antennae and the aedeagus is studied and discussed. It has been observed that males with antennae showing variations in segments 3, 4 and 5 only, and those with long hairs possess a small aedeagus; and those with more than three segments or only single segment of antennae modified have a larger aedeagus. Presumably in those males with variations in segments 3, 4 and 5 only, and those with long hairs, these aid as a clasping organ.