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A dragonfly is an insect belonging to the order Odonata, suborder Anisoptera (from Greek Î±Î½Î¹ÏÎ¿Ï anisos uneven + ÏÏÎµÏÎ¿Ï pteros, wings, because the hindwing is broader than the forewing).ossils of very large dragonfly ancestors in the Protodonata are found from 325 million years ago (Mya) in Upper Carboniferous rocks; these had wingspans up to about 750 mm (30 in).
Darners are large, fast flying dragonflies that come in colors ranging from brilliant blues and greens, to browns with clear wings. Females can be green or brown or purple. They are some of the largest dragonflies and can be up to 3 inches long with a wing span of 3.1 inches. They live near lakes, creeks, and rivers.