American black flour beetle
Tribolium audax (Halstead)
Secondary pest: Grain feeder
- Adults are 2.8 to 4.5 mm long.
- Adults are most similar in appearance to Tribolium madens (black flour beetle).
- Eyes are relatively round (the black flour beetle’s eye is oval).
- Larvae are cylindrical and dark brown in colour.
- Cereal grains, flour, meal, seeds and cereal products
Signs of infestation
- Disagreeable odour in the commodity is an early indication
- Damage is not distinctive
How to control
- Throughout Canada
- Is occasionally found in empty granaries in western Canada
- Does not normally infest stored grain
- Adults live on average 2 to3 months.
- Adult females lay up to 1000 eggs loosely among the food source.
- Date modified: