🪲Arilus cristatus

Arilus cristatus, also known as the North American wheel bug or simply wheel bug, is a species of large assassin bug in the family Reduviidae and the only species of wheel bug found in the United States. It is one of the largest terrestrial Hemiptera in North America, reaching up to 1.5 inches (38 mm) in length in its adult stage. This species exhibits sexually dimorphic characteristics, in that males are somewhat smaller than the females. A characteristic structure is the wheel-shaped pronotal ridge along its thorax. They are predators, using their proboscis to inject and dissolve prey tissue. The North American wheel bug is most active in daylight, residing in leafy areas and hiding whenever possible. Known habitats of the North American wheel bug include sunflowers, goldenrod, cotton, trunks of locust trees, and various fruit and tree groves. Despite the prevalence of the North American wheel bug in many habitats, the information compiled concerning the species is haphazard and incomplete.

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