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Arilus cristatus
The wheel bug, in the family Reduviidae, is one of the largest terrestrial true bugs in North America, being up to 1.5 inches in length. A characteristic structure is the wheel-shaped pronotal armor. The adult is gray to brownish gray in color and black shortly after molting, but the nymphs (which do not yet have the wheel-shaped structure) have bright red or orange abdomens.
Wheel bugs are common in eastern North America.
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