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| The Dragonflies
(Insecta: Odonata) of the Columbia Basin, British Columbia: Field Surveys, Collections Development and Public Education Table of Contents
In the Columbia Basin the family Coenagrionidae consists of 6 genera and 12 species. The adults are frequently blue, marked with black -- but the ground colour may be green, yellow, orange, red or purple. There are often two female colour forms, one of which is similar to the male (usually blue). Eggs are laid in the tissues of water plants and females may completely submerge for considerable periods during oviposition. The larvae are less elongate than those of the Lestidae, and have short labia, unstalked at the base. The genera most often encountered are Enallagma and Ischnura. Genus:
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