Species Trogoderma variabile - Warehouse Beetle

parabile Beal

Trogoderma variabile Ballion 1878

Sexual dimorphism: antennal club 6- or 7-segmented in males, 4-segmented in females(1)

probably indigenous to central Asia but now found in many parts of the world(2)(3); transcontinental in NA(1); considered adventive in Europe(4)

In Canada: flour/feed mills, warehouses, dwellings, occasionally granaries(1); prefers animal feed, whole kernels of barley and wheat, noodles, oatmeal, wheat germ, whole wheat flour, but may also infest dead animals, candy, cocoa, corn/fish meal, flour, nut meats, and dried spices; bee nests outdoors in Russia(2)

in Europe, wheat any dry vegetal and animal stored products(4)

minor pest in Canada; in other parts of the world (incl. Europe) may be a major/serious pest of stored products (esp. seeds, cereals, legumes, nuts, and other high-protein food)(1)(4)