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| The Dragonflies
(Insecta: Odonata) of the Columbia Basin, British Columbia: Field Surveys, Collections Development and Public Education Table of Contents
Members of the Aeshnidae, the darners, are large, swiftly flying dragonflies usually marked with blue, green or yellow. They are represented in the Columbia Basin by the generas Aeshna and Anax -- Aeshna has twelve species and Anax has one. British Columbia supports all species known in western Canada, but Aeshna septentrionalis has yet to be recorded in the Columbia Basin, even though it undoubtedly lives in the Rocky Mountains of the province. Adults tirelessly hunt for insects over ponds, lakes and streams, and will wander widely in search of prey. When they land, most species rest in a vertical position. Females oviposit in water plants or floating wood above or below the water line. The larvae are slender and sleek, with flattened labia lacking setae. They are rapacious hunters among water plants. Genus: |
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