The Williamson's Emerald is a long dark Somatochlora, striped Emerald, with indistinct striping on the side of its thorax. They can be difficult to net because they often hunt woodland borders at around treetop height, sometimes joining with other species in feeding swarms
Males patrol, with a combination of flying and hovering, a few feet above the water. Hunting usually takes place at woodland borders around treetop level, often as a part of a feeding swarm. I often see them hunting high above roads that cut through wooded or boggy habitats
Slow-moving, shaded streams, clear lakes, and bog ponds
Females lay eggs in wet, muddy soil above the water line. In between ovipositing they will dip their abdomen into the water, most likely to clean off any mud
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Range maps and checklists courtesy of Odonata Central. Copyright © 2016 OdonataCentral. All Rights Reserved. Abbott, J.C. 2006-2018. OdonataCentral: An online resource for the distribution and identification of Odonata. Available at www.odonatacentral.org.