ABUNDANCE AND DISTRIBUTION OF INSECT IN STORED WHEAT-GRAIN IN SONORA,MEXICO

Twenty-three species of insects were recovered from commercial storage facilities in Sonora, Mexico. The most common were lesser grain borer , Rhyzopertha dominica Fab., and the red flour beetle, Tribolium casta neum. Abundance was greatest in wheat stored on the ground and lowest in semi-underground and country metal silos. Diversity was very high d ue in part to the warm and dry climate; the highest incidence of pests were in the Southern Region.