(from the article `shield-backed katydid`) One species of shield-backed katydid, the Mormon cricket (Anabrus simplex), can be a serious pest in the Great Plains of North America. In 1848 at ... ...devastation of the agricultural crops grown in many countries throughout the world. In cattle-growing regions there often is competition betw... Found on http://www.britannica.com/eb/a-z/m/122