Black flour beetle
Tribolium madens (Charpentier)
Secondary pest: Grain feeder
- Adults are fairly large for flour beetles, 3.9 to 5.1 mm long.
- Eyes are relatively large and oval (the American black flour beetle’s eye is round).
- Larvae are cylindrical and dark brown in colour.
Signs of infestation
- Disagreeable odour in the commodity is an early indication
- Damage is not distinctive
How to control
- Is predominantly found in Europe
- In Canada, has been found in Manitoba, Ontario, Quebec, New Brunswick and Nova Scotia
- Has been reported from infested railcars of loose and bagged flour
- Has also been found in flour mills and warehouses
- Flour, meal, seeds, grain and processed cereals
- Adults can be long lived, living up to three years.
- Adult females lay up to 1000 eggs loosely among the food source.
- Black flour beetle is moderately adapted to a temperate climate.
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