About Enallagma praevarum (Hagen, 1861)
Enallagma praevarum, commonly known as the arroyo bluet, is a species of damselfly in the family Coenagrionidae. It is native to the western United States, ranging south to southern Mexico. This species is associated with slow-flowing streams or lake margins that have emergent vegetation. Within its native range, arroyo bluets occur along Southern California’s west coast, and in the sagebrush region along northeastern California’s border. They are most commonly found at intermediate elevations; in northeastern California, they have been recorded from sea level up to 4,600 feet, or 1,400 meters. The species is abundant in western Texas and southern Nevada, and is found across the entire states of Arizona and New Mexico. The typical habitat of the arroyo bluet is open areas with abundant shrubs and trees, in generally arid climates. It tends to inhabit areas near bodies of water including ponds, backwaters of arroyos, washes, canyons, and rivers. Its overall habitat type can be described as riparian thickets.