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Project Noah Nature School
Pachydiplax longipennis
Mature males develop a bluish-white pruinescence on the back of the abdomen and, in western individuals, on the thorax. They display this pruinescence to other males as a threat while defending territories at the edge of the water. Females have a short abdomen that makes the wings look longer in comparison.
Found throughout the United States
Spotted on Jun 14, 2009
Submitted on Jan 19, 2012
