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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.
I found one about 10 or 12 inches long in Indianapolis when I was in high school. I was out mowing the grass, and something was parting the long grass as it moved through. I turned off the mower and got closer to see. It was the biggest praying mantis I have ever seen. I reached down to grab it at the thorax.