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This genus is nearly world wide, with nine species occurring
in North America. The thorax is generally dark in
coloration, most species will have a single lateral thoracic
stripe making them stand out from darners and spiketails.
The markings on the front thorax vary as do the yellow
markings on the abdomen. Their wings are usually
clear, but may have an amber wash to them. Eyes are large,
metallic green in most speceies and meet broadly along a
seam. Legs are black.
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These dragonflies have a swift flight and can usually be seen flying rapidly over
rivers, streams and some occasionally lakes. When not
flying, they generally perch vertically or obliquely from
branches.
These genus has been known to hybridize making
identification a challenge.
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