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Description: Threecornered alfalfa hoppersare members of a group of insects often called treehoppers because they actively hop and fly when disturbed. Adults are green, about 1/4 inch long, and are taller than wide due to an expanded segment behind the head that extends over the abdomen. Nymphs are also green and wingless, lacking the enlarged prothorax. Each segment of the body is adorned with a pair of large filaments or spines. Other members of this group include treehoppers, some of which mimic thorns in their appearance. The twomarked treehopper, buffalo treehopper, and whitemarked treehopper, are other common species.
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