Pest Guides

Flat Grain Beetle

Cryptolestes ferrugineus


Flat Grain Beetle  | Rentokil Pest Control Zambia

  • Adult — About 2.5mm in length. Flattened body with very long antennae. Light red to dark reddish brown.
  • Larva — yellowish–white. 0.5mm long growing to 4mm when mature.


  • Prefers warm damp conditions. 69–103 days at 21°C, 26 days at 38°C.


  • Adults are winged but rarely fly.
  • Feeds on cereals, dates, dried fruits and other commodities.