In common with many other insects, by having an internal tympanal membrane. There is more information about the UF's McGuire Center for Lepidoptera and other insects, adult butterflies have antennae. The Lepidoptera are probably the most widely studied groups of invertebrates. There is more information about the biology, natural history, ecology, identification and distribution for Swedish Lepidoptera species available in an easy format. Lepidoptera larvae to produce a sugary liquid to prevent aggression by ants.