Bug Identifier
Merchant Grain Beetle / Sawtoothed Grain Beetle
Community identification

Merchant Grain Beetle / Sawtoothed Grain Beetle

Oryzaephilus mercator / Oryzaephilus surinamensis

Order & Family
Order: Coleoptera, Family: Silvanidae
Size
2.5 mm to 3.0 mm (approx. 1/8 inch) in length
See this bug in the Encyclopedia

Natural Habitat

Commonly found in pantries, kitchens, and food processing facilities, especially in stored cereals and grains.

Diet & Feeding

They feed on a variety of dried foods including flour, cereals, pasta, bread, dried fruits, nuts, seeds, and chocolate.

Behavior Patterns

They are flattened insects that can crawl into tiny cracks of food packaging. They do not fly frequently. Female beetles can lay up to 280 eggs over several months.

Risks & Benefits

They do not bite or sting and do not spread disease. The primary risk is contamination and spoilage of stored dry goods in homes and commercial settings.