The horned clubtail (Arigomphus cornutus) is a clubtail dragonfly of Canada and the United States.
The horned clubtail is long and lacks an abdominal club. It has a greenish thorax with black stripes and a black abdomen with a light stripe along the top. It has blue eyes and black legs. It also has distinctive wide forked yellow claspers shaped like cow horns and a large sloped bridge between the eyes.
The horned clubtail lives in ponds and sluggish streams. Its range includes Canada and several U.S. states: Colorado Iowa Minnesota Montana – Carter, Custer, Fallon, Powder River, and Wibaux Counties; only in artificial reservoirs. Nebraska – Cherry and Cuming Counties New York – (rarely) North Dakota South Dakota Wisconsin Wyoming
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