Ornate carpet beetle
Trogoderma ornatum (Say)
Secondary pest: Grain feeder and scavenger
- Adults are oval, 1.9 to 3.6 mm long and are dark brown with light brown patterns on the elytra.
- Larvae are oval shaped and covered in dense hairs with distinct tufts on the last abdominal segment.
- Larvae change from whitish yellow in color to reddish brown as they mature.
- Other Trogoderma species
- Attacks cereals, beans, barley, cottonseed pellets, broom corn, beet seed, fish meal, canary seed, oats
- May attack stuffed mammals and birds, insect collections, botanical specimens
Signs of infestation
- Contamination of product with cast larval skins
- Is a generalist feeder and damage is not distinguishable from other generalist feeders
- Larvae cause all damage, adults are nectar and pollen feeders
How to control
- In Canada, it occurs only in southern Ontario
- Females lay eggs amongst the food source.
- Larvae are able to undergo diapause (dormancy) if conditions for development are not suitable.
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