IdentificationAdult — 1/4"–3/8" in length. Uppermost is black, underside is white. Larva — as D. lardarius but with an orange stripe running down the length of the back.
DescriptionFeeds on various animal products and dried fish. Pupates in solid material, e.g. wood. The quantity of white on the underside may vary according to species. Adults fly readily. Lifecycle 2–3 months at 18–25°C.