Pest Guides

Broadhorned Flour Beetle

Gnatocerus cornutus



Broadhorned Flour Beetle Image | Rentokil Pest Control Australia
  • Adult – 3.5 – 4.5mm in length. Male has two enlarged mandibles on the head giving the appearance of horns. Female very similar in appearance to T. confusum but has smooth elytra.
  • Larva – similar to Tribolium species but slightly bigger.



  • Temperature limits 15–32°C. 8 weeks at 27°C. Cannot complete life cycle below 10°C.


  • Feeds on flour, dough, semolina etc. Moth eggs and larvae may supplement the diet.