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Somatochlora is a genus of dragonflies in the family Corduliidae. Members of this genus are medium-sized dragonflies with dark bodies and a metallic green lustre. The abdomens of males are distinctive, with the first two segments bulbous-shaped, the third constricted, and the rest of the abdomen club-shaped with a straight ending. The exception is S. boisei, which is shaped like a Cordulia species. There are usually two crossveins between the hind wing base and the triangle, where Cordulia have only one crossvein. [edit] Species
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