Generic filters
Exact matches only
Filter by Categories
Bed Bug Treatments
Bee-Removal
Commercial Pest Control
Garden Pests and Lawn Pests
Open to the Public
Other Pests
Pest Control Ants
Ant Baits
Ant Research
Pest Control Birds
Pest Control Cockroaches
Cockroach Baits
Cockroach Research
Pest Control Equipment
Pest Control Fabric Pests
Pest Control Fleas
Pest Control Flies
Pest Control Mosquitoes
Pest Control Products
Pest Control Software
Pest Control Spiders
Pest Control Stored Product Pests
Pest Control Ticks
Pest Control Treatments
Pest Control Wasps
Professional Pest Manager Magazine
Rodent Control
Mouse traps and Rat Traps
Rat Bait and mouse bait
Rodent Research
Running a pest control business
Insurance
Sales and Marketing
Training
Termite and Pest Inspections
Termite Professional magazine
Termite Research
Termite Treatment
Baits
Pre-construction
Soil treatment
Filter by content type
Taxonomy terms

Warehouse beetle (Trogoderma variabile)

Warehouse beetle

The warehouse beetle is an invasive pest in Australia.

First recognised in Australia in 1977. Present from northern NSW and into SA, but with limited distribution in QLD and WA.

Widely distributed in Europe, North America and other temperature areas of the world.

Larvae:

Larvae can be 5-8 mm long and are covered with reddish brown hairs. They have a very similar appearance to carpet beetle larvae – “woolly bears”.

Adults:

Adults are an oval beetle, 3-5 mm long, with 3 light bands across the wing covers.

Can be confused with carpet beetles, especially the larvae and the adults can be confused with the variegated carpet beetle. Can also be confused with the khapra beetle which is often considered as the “world’s worst stored grain pest”. However, the khapra beetle is not currently in Australia.

Female beetles can lay up to 90 eggs in her lifetime.

The life-cycle takes 2-4 months to complete, with the larvae going through several moults before becoming an adult.

Under sub-optimal conditions, they can slow their life-cycle moulting numerous times before pupating. When food is scarce the larvae can enter diapause (an extended period of inactivity).

Adults only live for 7-10 days.

Only the larvae cause damage.

Warehouse larvae will eat seeds and grains but also dry packaged foods. They will also a range of animal material including bee and wasp nests, rodent and insect carcases and droppings.

The larvae are able to chew through packaging and even plastic containers.

Adult warehouse beetles are excellent flyers and can disperse quite easily.

  • Check all incoming food materials
  • Place all opened food stuffs in sealed plastic containers
  • Clear up any food spills

Monitoring and treatment notes:

Professional Pest Managers can login for more information