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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).
Dragonflies are hard to miss-ranging in size from two or three centimeters all the way up to ten centimeters long, they look like small airplanes, with four very large transparent wings and a long, tubular body. They are often colorful. They make a surprisingly loud and deep buzzing sound when flying.ragonflies are the largest insects in British Columbia. Other names for dragonflies are skimmers, darners and gomphus. Most BC dragonflies are darners, from the family Aeshnidae. Skimmers and gomphus are names for other varieties of dragonfly.