Sawtoothed Grain Beetle
Oryzaephilus surinamensis
The Sawtoothed Grain Beetle is a common pantry pest that infests processed grain products. Its extremely flat body allows it to enter packaging through minute gaps. It cannot bore into whole kernels but thrives in flour, cereals, pasta, dried fruit, and candy.
Identification
Size
2.5-3 mm
Color
Flat, dark brown
Key Trait
Very flat body with six saw-tooth projections on each side of the thorax; infests processed grain products.
Behavior & Habitat
Extremely flat body allows access through very small gaps in packaging. Feeds on processed and broken grain products. Cannot infest intact whole kernels. Populations can grow rapidly in warm pantries.
Habitat: Home pantries, grocery stores, and food warehouses. Infests cereal, flour, pasta, dried fruit, chocolate, and pet food.
Diet: Processed grain products, cereal, flour, pasta, dried fruit, nuts, and candy.
Signs of Infestation
- Tiny flat brown beetles in cereal boxes and flour containers
- Beetles found throughout the pantry, even in seemingly sealed packages
Risks & Damage
Contaminates a wide range of stored food products.
Prevention Tips
- 1.Transfer pantry goods to sealed containers immediately after purchase
- 2.Clean pantry shelves and vacuum crevices regularly
- 3.Discard expired products promptly
Why DIY Treatment Often Falls Short
Their flat body lets them hide in shelf cracks and tiny gaps in packaging. Surface sprays in food storage areas are inappropriate near food.
Professional Treatment
Professionals inspect and discard infested products, treat shelving cracks with food-safe formulations, and install monitoring traps.
Related Pests
Frequently Asked Questions
How do sawtoothed grain beetles get into sealed boxes?
What are the saw teeth for?
Can they infest whole grain?
Need Help With Sawtoothed grain beetle?
If you're seeing signs of sawtoothed grain beetle in or around your home, professional treatment is the fastest way to stop the problem. Lotus Pest Control offers free inspections to identify the issue and recommend the right solution.
At a Glance
- Category
- Pantry Pests
- Scientific Name
- Oryzaephilus surinamensis
- Size
- 2.5-3 mm
- Color
- Flat, dark brown
- Key Trait
- Very flat body with six saw-tooth projections on each side of the thorax; infests processed grain products.
- Regions
- Northeast, Southeast, Midwest, Southwest
- Threat Level
- Low
- Risk Types
- food
- Seasonal Activity
- MarAprMayJunJulAugSepOctNovDecJanFebnonelowmoderatehighpeak