The Curculionidae is the largest family in the Coleoptera and in the whole Insecta. Its members are also known as weevils or snout beetles, because they bear an elongated, pronounced rostrum. The antennae are clubbed and the larvae lack legs. The sub-family Scolytinae has recently been incorporated within the Curculionidae. Many are plant pests, including species in the genera Apion, Hypera, Lixus, Rhynchophorus, Sitona, and Sitophilus.