Beetle Beetles are insects in the order Coleoptera and the superorder Holometabola. Their front wings are hardened into protective cases called elytra, distinguishing them from most other insects. Related Articles: Great Spotted Woodpecker Species Guide: Appearance, Diet, Habitat, Behavior, Stats, And Conservation StatusEurasian Wryneck (Jynx torquilla) Species Guide: Appearance, Diet, Habitat, Behavior, Stats, and Conservation StatusLesser Spotted Woodpecker (Dryobates minor) Species Guide: Appearance, Diet, Habitat, Behavior, Stats, And Conservation StatusGlossary: WoodpeckerGlossary: NuthatchesGlossary: ToadLesser Horseshoe Bat (Rhinolophus hipposideros) Species Guide: Appearance, Diet, Habitat, Behavior, Stats, And Conservation StatusIdentifying UK Corvids: A Comprehensive GuideUnderstanding Bat Echolocation: How Bats Navigate the DarkCommon Frog (Rana temporaria) Species Guide: Appearance, Diet, Habitat, Behavior, Stats, And Conservation Status