Plaster beetle
Cartodere constricta (Gyllenhall)


Secondary pest: fungal feeder
Order: Coleoptera
Family: Latridiidae
Acronym: CCO


  • Adults are very small, 1.3 to 2.0 mm long.
  • Prothorax is constricted at midpoint and small relative to abdomen.
  • Larvae are small, slender, flattened and mobile, no urogomphi are present.

Similar species

Commodities affected

  • As plaster beetles are fungal feeders, they do not directly attack the commodity, but are found associated with: stored grain, cereal products, wheat, oatmeal, flax, flour, buildings, cellars, mouldy cheeses, mouldy plant material and manure heaps.

Signs of infestation

  • No specific signs of infestation other than possibly the presence of mould


  • Do not cause direct damage to commodity
  • Are an indication of infection with fungi and poor storage conditions
  • Do not persist unless commodity remains damp

How to control

Geographic range

  • Is found worldwide
  • Is distributed throughout Canada

Life history

  • Adults and larvae feed exclusively on fungi.
  • Females lay eggs amongst the commodity.


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