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Sawtoothed Grain Beetle

Sawtoothed Grain Beetle

Sawtoothed Grain Beetle

Oryzaephilus surinamensis

Color: The adult is a small, active, brown beetle, 2-3mm long, with a flattened body and six saw-toothed projections on each side of the thorax. The larva is yellowish-white, about 2-3mm long, with a brown head.

Size: 1/10 to 1/8 inch (2-3 mm).

The Sawtoothed grain beetle is common in stored-food products such as cereal, cornmeal, cornstarch, popcorn, rice, dried fruits, raisins, flour, pet foods, bran, macaroni, sugar, and bread. They are capable of chewing into unopened paper or cardboard boxes, through cellophane, plastic, and foil wrapped packages. Once inside, populations build up rapidly often spreading to other stored foods and into food debris accumulated in the cupboard corners.

The Sawtoothed grain beetle is a scavenger and cannot fly. Adults and larvae are external feeders, feeding on finely divided food particles and not whole grains. Large populations of this beetle can develop quickly, forcing adult beetles to seek new food sources. They have been known to invade every package or food stored near an infested food product.

Sawtoothed grain beetle adults usually live about 6 to 10 months, with some living as long as 3 years. Females usually emerge in April and lay an average of 300 eggs. Egg laying begins about 5 days after emergence and continues up to 3 to 4 weeks. Eggs hatch in about 8 days, larvae mature in 37 days, and pupa about 67 days. They prefer cereal-based products.

Adults and larvae are external feeders, feeding on finely divided food particles and not whole grains. The Sawtoothed grain beetle is common in stored-food products such as cereal, cornmeal, cornstarch, popcorn, rice, dried fruits, raisins, flour, pet foods, bran, macaroni, sugar, and bread.

It readily penetrates packaged cereals, dried fruits, and candies. It also attacks flour, meal, sugar, drugs, dried meat, and tobacco.

  • The simplest and most effective control measure is to locate the source of infestation and quickly get rid of it. Use a flashlight or other light source to examine all food storage areas and food products carefully.
  • Dispose of heavily infested foods in wrapped, heavy plastic bags or in sealed containers for garbage disposal service, or bury deep in the soil if permitted, practical, and regulations allow. If you detect infestations early, disposal alone may solve the problem.
  • At the time of purchase, carefully examine foods, such as flour, pancake flour, cornmeal, cereals, raisins, dry dog and cat food, spices, candy, dates, dried meats and fruits, rice, and macaroni. Check the packaging date to establish freshness. Examine broken and damaged packages and boxes to avoid bringing these stored-product pests accidentally into the home.
  • Purchase seldom-used foods in small quantities to prevent long storage periods of one month or more, especially during the warm summer months.
  • Store susceptible foods in insect-proof containers of glass, heavy plastic, or metal, ideally with screw-type lids, or store in a refrigerator or freezer. Use older packages before newer ones, avoid spillage in cabinets, and always keep food storage spaces clean.
  • Properly ventilate the storage area to discourage these moisture-loving stored-product pests. Lightly infested or suspect foods with questionable infestations can be heated in a shallow pan in the oven at 120 degrees F for 1 hour or at 130 degrees F for 30 minutes, placed in a deep freeze at 0 degrees F for 4 days, or heated in a microwave oven for 5 minutes.

MANUFACTURER RECOMMENDED PRODUCTS AND TREATMENT FOR Sawtoothed Grain Beetle CONTROL

Pests need food, water, and shelter. Often the problem may be solved just by removing these key items. Before even thinking about chemical pest control, it is important to be aware of Pest’s Conducive conditions & It’s Recommendations.

Pesticides can be purchased in many different forms, each form has specific uses and application methods The pesticide application method you choose depends on the nature and habits of the target pest, the properties of the pesticide, the suitability of the application equipment, and the cost and efficiency of alternative methods. Your choice is often predetermined by one or more of these factors. Follow label directions for volume recommendations and application rates based on the pest to be controlled and utilize appropriate application tips on equipment. , these application methods are for informational purposes only. To know specific applications method/s for the product you buy, please refer actual packages for complete Label Verbiage.

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