Length of 2.8-5 mm, with upper surface reddish-brown to black. Front and middle femora with keels present on the front and rear edges. An ocellus is present on the top of the head and the antennal club is composed of 3 segments.
Larvae are pale to dark brown, lanceolate shaped with wider head and tapering tail. Long tufts of hair extend from the apex of the abdomen. Initially 1mm in length but final instar can reach 13mm.
White to cream coloured and oval shaped, measuring 0.25 to 0.5 mm in length. Spine-like projections are evident at one end. Laid singly or in batches on or near to potential food sources.
Europe, North and Central America
Materials containing keratin and wool such as rugs, upholstery, clothing, fur and skins. Will also feed on stored grain and cereals.
Signs include feeding damage and the presence of larvae or their cast skins which are carrot shaped and brown.
Generations: 2-3 (More in warm locations)