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The Dragonflies (Insecta: Odonata) of the Columbia Basin, British Columbia: Field Surveys, Collections Development and Public Education Table of Contents Return to Family Coenagrionidae Ischnura Charpentier Ischnura is a cosmopolitan genus, occurring almost everywhere Odonata live, although it is mostly absent from boreal habitats. Its distribution in North America is decidedly southern. British Columbia has four species, but only the two most widespread, I. cervula and I. perparva, occur in the Columbia Basin. B.C.'s male species are mostly blue and green; females may be similarly coloured or be tan or orange. The abdomen is usually Ischnura cervula with prey black above with a blue tip. Males have a distinct projection on top of the last abdominal segment. Females may develop extensive pruinosity as they age. Species: Ischnura cervula Ischnura perparva

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