Bui. 113, Bureau of Ent imology, U. S. Dept. of Agriculture. 



Plate I. 



Longicorn Beetle, Moneilema crassum, an Important Enemy of Prickly Pear. 



Adults feed on exterior of joints of the cactus, while the larvae destroy the interior of both 



j.iiin- jiimI stems. Enlarged. (Original.) 



