adventive and widespread in NA, but absent across se US - Map(3)(4)(5)(1), native to the Old World (origin unknown; non-native in Europe), now nearly cosmopolitan in warm regions(6)(7)
Habitat
outdoors, on carrion and animal skins; common in granaries, warehouses, shops, and dwellings on stored products, incl. fishmeal, smoked meat, bone and bone meal, feathers, and skins(2)(4)