adventive and widespread in NA - Map(4)(5)(3)(6), native to the Old World (origin unknown; non-native in Europe), now cosmopolitan(7)(8)
Habitat
in houses, on baled skins, and in other products of animal origin(5); in warehouses(3) and deep-pit poultry houses; outdoors, on carrion and animal skins(2)
Food
larvae and adults feed on dead insects and various materials of animal origin(3), incl. feathers, fur, bone, cheese, and dried fish (esp. freshwater fish)(2)