A major pest of stored grain, the khapra beetle (Trogoderma granarium can enter a dormant phase known as diapause in an attempt to weather unfavorable conditions. Researchers in Canada, however, have found the threshold temperature that will kill the beetle at all life stages, even diapause. Here, an adult, larva, and larval skins of the khapra beetle are shown, as well as damage to wheat grains. (Image credit: Ministry of Agriculture and Regional Development, Bugwood.org)