Sawtoothed grain beetles, Oryzaephilus surinamensis, are nearly as common as the Indianmeal moth, and infest many of the same foods (especially bird seed, breakfast cereals, chocolate, and dried fruits and nuts). Adults are small (approximately 1/16 to 1/8 inch long) and flat. They can be identified, aided by use of a hand lens or magnifying glass, by the row of pointed teeth located on each side of the thorax, just behind the head (B).
Their small size allows easy entry into small or minute cracks, including creases in food packaging. Sawtoothed grain beetles sometimes hide in and around outside layers of packaging and then enter when the package is opened. Adult beetles are most commonly found in the kitchen in or near their food source. The nonflying sawtoothed grain beetle adults are very active, long-lived (6 to 8 months or more), and the adults feed.
Other Articles in this Learning Lesson
- An Introduction to Stored Product Pests in the Home
- Food Items Conducive to Stored Product Pests in the Home
- The Indian Meal Moth, a Stored Product Pest
- The Sawtoothed Grain Beetles, a Stored Product Pest
- The Red Flour Beetle, a Stored Product Pest
- The Rice Weevils, a Stored Product Pest
- The Cowpea Weevil, a Stored Product Pest
- The Warehouse Beetle, a Stored Product Pest
- The Adult Drugstore Beetle, a Stored Product Pest
- How to Solve a Current Infestation of Stored Product Pests
- How to Prevent Future Infestations of Stored Product Pests
- A Summary of Stored Product Pests in the Home