Connect with your County Extension Office », Find an Extension employee in our staff directory », Get the latest news and updates on Extension's work around the state, Feedback, questions or accessibility issues: info@extension.wisc.edu | © 2020 The Board of Regents of the University of Wisconsin System Privacy Policy | Non-Discrimination Policy | Discrimination and Harassment Complaints | Disability Accommodation Requests | Civil Rights. The female sawtooth grain beetle emerges in … Adults are about 1/8 inch long and have six saw-like teeth on the body segment behind the head. The adults are 2.5-3.5 mm long, dark brown in colour and with 6 teeth along each side of the prothorax (hence the name 'saw-toothed'). Pest Control Leads, Online Branding and Web Marketing Exclusively for PCOs, Online Branding & Social Sharing Campaigns. The adult beetles have been reported to remain alive for three years in certain cases. Revised:  4/27/2004 Uninfested dry goods should be stored in substantial glass or plastic containers with tight fitting lids to prevent access, and spread of the infestation. Content Filtrations 6. Preventive measures include: keep storage and production area clean and dry, maintain relative humidity in storage between 40% and 60% and ensure that packaging materials pallets etc. The female adult lays her eggs individually or in small batches in and around a food supply. Eggs are laid around the product. Rarely, they have also been found to feed upon dried meat. This pest can easily enter into the storing bags or containers due to its flattish form. These are laid in, or adjacent to, a suitable food supply and at a temperature of 20-23 C hatch in 8-17 days to give flattened larvae about 0.9 mm long. Adult sawtooth grain beetles are actively feeding during the cold season. The sawtooth grain beetle is a non-flying insect. Eggs are laid around the product. They make the food products unpalatable for human use. It likes to infest stored food products like grain-based products, dried fruit, spices, drugs, herbs, candy, chocolate, and pet good. Commodities infested: O.surinamensis has a preference for grain products, while O. Mercator prefers dried fruits and oilseeds. The eggs are small, slender and white. They do not spread disease, nor do they damage homes or the furniture in them. Copyright 10. These beetles feed on a variety of stored products including flour, cereals, bread, pasta, dried fruits, sugar, nuts, drugs, dried meat, and tobacco. Copyright © 2020 Clemson UniversityClemson Cooperative Extension | 103 Barre Hall Clemson, SC 29634864-986-4310 | Contact UsHGIC@clemson.edu, College of Agriculture, Forestry and Life Sciences, Integrated Pest Management (I.P.M.) As every other beetle has its life-cycle, this bug has a life-cycle in which it complete in a period of 3 weeks, as a result, in a period of 30 days serious growth must have occurred. Both beetles lay eggs singly or in small batches in the food material where the life cycle is completed. The habits and development of the two species are similar. The eggs of the sawtooth grain beetle are white in color, microscopic in size, and have an elongated shape. They seldom fly inspire of having a well developed wing. Several generations can be produced each year due to the shorter time required for life cycle development in a controlled environment or during the summer months. The larvae are mobile and external feeders. An EEO/AA employer, University of Wisconsin-Madison Division of Extension provides equal opportunities in employment and programming, including Title VI, Title IX, the Americans with Disabilities Act (ADA) and Section 504 of the Rehabilitation Act requirements. Sawtooth Grain Beetle Life Cycle The sawtooth grain beetle likes to lay eggs in small batches or singly in food packages where it completes its entire life cycle. The female adult lays her eggs individually or in small batches in and around a food supply. Control: Because saw-toothed grain beetles are food pests, the best way to control them is to dispose of infested products. Malting barley may be rejected because of poor germination, whilst milling wheat is adversely affected by tainting and discoloration. Not only do they contaminate food they also can create favorable conditions for growth of molds. Adults usually live about 6 to 10 months, with some living as long as 3 years and 3 months. They may either be laid in crevices or freely. Our Facebook page to discuss with other digital marketers latest news and strategies in SEO and SMM. 1. With their flattened body, they easily hide in cracks and crevices, and can penetrate poorly packaged materials. All recommendations are for South Carolina conditions and may not apply to other areas. Sawtooth grain beetle larvae are usually about 1/8 of an inch in length. Tropical warehouse moth (Ephestia cautella), Sawtoothed grain beetle (Oryzaephilus surinamensis), Rust red flour beetle (Tribolium castaneum), Mediterranean flour moth (Ephestia kuehniella), Lesser grain borer (Rhyzopertha dominica), Larger grain borer (Prostephanus truncatus), Confused flour beetle (Tribolium confusum), Coffee bean beetle (Areacerus fasciculatus), Broad horned flour beetle (Gnatocerus cornutus). The larva is yellowish-white, about 2-3mm long, with a brown head. Treatment around food preparation areas are not recommended and never spray insecticides on or near food. Heating infested products to 140°F for two to three hours or freezing at 10°F or less for 48 hours will kill all life stages the insects. The habits and development of the two species are similar. It is cosmopolitan in distribution. There is a tooth on the hind leg of the males along the femur, which does not exist on female sawtooth grain beetles. 2020 © Copyright EcO2. Control of the saw-toothed grain beetle begins with a careful inspection of  stored foods. Both beetles lay eggs singly or in small batches in the food material where the life cycle is completed. In warm conditions of 85 to 95 degrees Fahrenheit and 70 percent humidity, the sawtooth grain beetle can produce 6 to 7 generations of progeny with less generations produced during the winter. Description: 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. Adult females lay 300-400 eggs. Follow us on Twitter for important industry news and latest updates in digital marketing. Detailed information about the use of cookies on this website and how you can manage or withdraw your consent at any time can be found in our Privacy Statement. The sawtoothed grain beetle cannot fly, but the merchant grain beetle can fly. The length of head behind the eye is long in O. surinamensis, short in O. mercator. You cannot control this pest with insecticides alone. Within a few hours of hatching, larvae begin to feed. Several generations can be produced each year due to the shorter time required for life cycle development in a controlled en…