Indiana bats feed exclusively on terrestrial and aquatic flying insects. The most common prey items taken are moths (Lepidoptera), beetles (Coleoptera), and mosquitoes and midges (Diptera). Selection of prey depends largely on availability in the foraging habitat with diet varying seasonally, by reproductive status of females, and from night to night. In southern Michigan, Indiana bats primarily ate caddisflies (Trichoptera) and bees, wasps, and ants (Hymenoptera), in addition to the more common prey previously listed. In the Ozarks of southern Missouri, the bats also primarily ate bees, wasps, ants, moths, and beetles, as well as leafhoppers (Homoptera), although diet did vary throughout the summer. Bats in Indiana were found to prefer beetles, moths, mosquitoes, midges, leafhoppers, and wasps. Other arthropod groups which are consumed by Indiana bats in very limited quantities are lacewings (Neuroptera), spiders (Araneae), stoneflies (Plecoptera), mayflies (Ephemeroptera), mites and ticks (Acari), and lice (Phthiraptera).