ODONATA

Key Characters:

Rectangular stigma (pigmented patch) near tip of each wing

Large compound eyes

Short, bristle-like antennae

In damselflies, front and hind wings are stalked (narrow at
      the base) and similar in size and shape

In dragonflies, hind wings have an enlarged anal region
      (broader toward the base than front wings)

Common Families:

Dragonflies (suborder Zygoptera)

Aeshnidae -- Darners

Libellulidae -- Common skimmers

Gomphidae -- Clubtails

Damselflies (suborder Anisoptera)

Coenagrionidae -- Narrowwinged damselflies

Lestidae -- Spreadwinged damselflies

Calopterygidae -- Broadwinged damselflies