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These are the most popular or best known of all dragonflies. Some twenty-one
species are presently known to North America. Sizes are variable ranging from medium
to large. There thorax is robust, their abdomens stout and more or less flattened.
They are showy insects, often with colorful wing patterns and brightly colored bodies
as well. Their head is rather large.
Males and females are noticeably dimorphic. Females are generally less colorful.
species of this genus are easy to observe since most perch for a long enough period
of time to get a good look and generally perch close to shore on twigs and vegetation
sticking up from the waters edge.
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