Black carpet beetle
Attagenus unicolor (Braham)


Secondary pest: Grain feeder and scavenger
Order: Coleoptera
Family: Dermestidae
Acronym: AUN


  • Adults are uniformly dark brown to black with dark or gold brown hairs.
  • Adults fly, are 2.8 to 3.0 mm long and are short lived.
  • Larvae are reddish-brown in color reaching a length of 6 to 8 mm.
  • Larvae have a tuft of brown hairs at the posterior end.

Similar species

  • Alphitobius species
  • Dermestes species
  • Trogoderma species

Commodities affected

  • Feeds on dried plant and animal material
  • Can feed on household items including wool articles, some synthetic fibres, cereal products and dried pet food
  • Also feeds on barley, peanuts, bran, ground maize, alfalfa meal,
  • May be a pest in museums, attacking hides, furs, nsect specimens, wool articles, oilseeds

Signs of infestation

  • Holes in commodity
  • Contamination with cast larval skins


  • Damages products by feeding and burrowing in material

How to control

Geographic range

  • Is distributed worldwide and found across Canada

Where found

  • Found in grain storage in grain dust, debris and spilled grain

Life history

  • Beetle can overwinter as either an adult or in the larval stage.
  • Developmental temperature ranges from 2° to 25°C.
  • Larvae can enter diapause (a dormant state during which development slows or stops) if developmental conditions are unsuitable (low temperatures, short day length, low population densities).


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Did you know?

The black carpet beetle can be found in households feeding on wool articles, some synthetic fibres, cereal products and dried dog food