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Later they will eat larger insects, beetles, grasshoppers, crickets, and other pest insects. Praying mantises are large, solitary, slow moving, and predaceous insects that catch their prey with their front legs. They do not have jumping hind legs. Of the 20 species of mantises that occur in North America, the introduced Chinses mantis, at a lenght of as much as four inches, is the largest.
Both native and introduced species of Praying mantis are quite large, some over 3 to 4 inches long. The body is tarnish-brown with the longitudinal forewing's outer margins edged in a pea green color. The forelegs are modified to close like a knife blade back against its handle (pocket knife-like).