Scientific name: Anthrenus verbasci Family: Dermestidae Order: Coleoptera Risk level: High Category: Beetle
? What is the varied carpet beetle
Scientific name: Anthrenus verbasci
Family: Dermestidae
Order: Coleoptera
Risk level: High
Category: Beetle
The varied carpet beetle (Anthrenus verbasci) is one of the smallest household beetles (2–3 mm), with a distinctive beige, white and black pattern on its wings. Adults feed on pollen in gardens, but the hairy larvae, known as “woolly bears,” cause damage indoors.
Life cycle of the varied carpet beetle
It undergoes complete metamorphosis. Eggs are laid directly on food, and the larva is the damaging stage. A full generation takes 4–8 weeks. Multiple generations may breed in an infested warehouse.
Distribution of the varied carpet beetle
It occurs in food warehouses worldwide and is common in the Gulf, Saudi Arabia and Egypt, especially in hot warehouses.
Damage and risks associated with the varied carpet beetle
It damages wool carpets, clothing, museum collections, feathers and animal specimens in museums.
Signs of a varied carpet beetle infestation
Signs include adult insects around light sources; larvae and silken threads in food (moths); droppings and hollow grains caused by weevils and beetles; and small white eggs on food.
Where varied carpet beetles are found
They occur in carpet corners and beneath furniture, clothing closets, museums, and wooden insect-display frames.
Varied carpet beetle control methods
Monitor with pheromone traps. Spray the warehouse with pyrethroids. Fumigate stored products with phosphine or methyl bromide. For physical control, lower the temperature below 10°C or raise it above 55°C. Rotate stock using FIFO.
Varied carpet beetle control products
Pyrethroids for warehouses, phosphine (PH₃) for fumigation, deltamethrin for residual spraying and diatomaceous earth for grain.
Requirements for controlling varied carpet beetles in food facilities
FSSC 22000 Version 7: stored-product pests are high priority. Pheromone traps with weekly documentation are mandatory. BRCGS: stored-product pests in a product constitute a major Non-Conformance.
A fact about the varied carpet beetle
Anthrenus beetles are a major threat to natural cultural heritage. They contributed to the destruction of irreplaceable animal specimens in major museums around the world before modern control protocols were developed.
Frequently asked questions about the varied carpet beetle
Q: How do stored-product pests enter a facility?
A: Usually through incoming shipments. Carefully inspect samples from each shipment and quarantine new purchases.
Q: Is a low temperature enough to eliminate stored-product pests?
A: Yes. Temperatures below 10°C for two weeks stop reproduction and kill vulnerable stages. Temperatures below −18°C for three days kill all stages
