Midge, common name for any minute fly that resembles small mosquitoes. Some species of midges are harmless to humans; their eggs are laid in water, and the bright red larvae are usually wholly aquatic. The larvae of a few species live in soft earth or mud. The adults are common in swarms in early spring and in late autumn. The biting midges are often very annoying to humans in sandy regions. These sand flies, or punkies, are the smallest bloodsucking insects known, some being no larger than 1 mm (0.04 in) long. For other insects known as sand flies, see Sand Fly.
Scientific classification: Midges make up the families Chironomidae and Ceratopogonidae in the order Diptera.