This stored product pest thrives in packaged grains, fruits, and tobacco. The merchant grain beetle is capable of flight but the sawtoothed grain beetle is flightless. By choosing All-American Pest Control, you can be sure that you will receive quality services, thorough treatments, and a commitment to solving your pest problem by our trained, experienced, and friendly experts. [1] Larva molt two to four times[1] before pupating in a cocoon-like structure made by joining together small grain kernels and pieces of kernels. They will also attract male moths. Request a FREE evaluation or get a quote over the phone. For years they were considered 1 species until breeding experiments showed they were 2 different species. The adult merchant grain beetles are strong fliers and may originate from other areas; they also are introduced into new grain from contaminated grain. With over 50 years of experience, we know the time, effort and patience it takes to solve any pest problem, including problems with nuisance merchant grain beetles. Adults live an average of six to … The Merchant Grain Beetle, like the Saw-Tooth Beetle, are not able to feed off hard shelled pantry items like whole grains, or hard shelled seeds such as corn. Body: The body is flat. Email Signup: [1] Unlike O. surinamensis, adults are capable of flight. Males can be separated from females by observing a tooth on the femur of the hind leg. Both of these grain beetles are found in kitchens, food processing areas or warehouses. The number of different types of insects that will invade grains, flours and other foodstuffs stored in your home is truly dizzying. Merchant grain beetles are small in size, only growing to be about 1/10th of an inch in length. When buying food products from a store inspect the packaging to ensure that there are no holes or rips in them. Merchant grain beetles are found in pantries or in food processing areas or warehouses. In homes, the insects primarily infest dry pantry goods. Adults are small brown slender beetles, about 3 mm in length. Both saw-tooth and merchant grain beetles are similar in appearance, with six saw-like tooth projections on each side of the thorax (section between head and abdomen). the pupal stage lasts about a week. The habits and development of the two species are similar. Yes, please notify me of important updates & offers. It can be very difficult to completely get rid of merchant grain beetles from your home because all adults, eggs, and larvae need to be found and eliminated. The adults of the sawtoothed grain beetle, on the other hand, cannot fly and must be introduced from contaminated grain. [2], In the home, products susceptible to infection should be kept in sealed containers to exclude these beetles. Home › Pest Identification › Merchant Grain Beetles. These guys are also similar to another pantry pest, weevils, which are also beetles. Length: It is about 2.5 to 3 mm long. Grain Beetles -Saw-Tooth Beetles. Store grains offer ample food sources for a number of insect pests. These pests are attracted to nearly any stored food product, particularly cereals, breakfast foods, flour, dried fruits and meats, pet foods, and many other items. In some cases, grain can be rejected at the terminal. Despite their name, merchant grain beetles are usually not found in grain products, but instead inside of stored dry foods like cereals, cake mixes, cookies, chocolate, and dry pasta. 5.0 Read Google Reviews, Still not sure what service you need? Don't forget to clean and vacuum under the shelves and any wire shelving. Clean and Vacuum: After inspection and dicarding infested items, clean and vacuum cracks and crevices and shelves. Substantial numbers of grain-infesting insects can reduce the value of grain or render it unfit for processing or feeding. Because both species are approximately 1/10-inch long, the larger size of the merchant grain beetle is difficult to assess in the grain bin. The merchant grain beetle, however, is less cold tolerant and lays only about one-half to two-thirds as many eggs as does the sawtoothed grain beetle. The merchant grain beetle's body shape allows it to crawl into packaging to eat, live and have babies. 3. To schedule your free home evaluation, contact us today at All-American Pest Control! Also known as Oryzaephilus mercator Description The merchant grain beetle is a common stored product pest found not only in Canada but worldwide. JavaScript seems to be disabled in your browser. [1] Freezing infested foodstuffs at -18 °C for six days will kill all stages of the O. mercator life cycle. With the holiday season upon us, the National Pest Management Association (NPMA) is educating homeowners about certain insects that can infest and contaminate food in pantries. Merchant grain beetles can infest stored food products and can contaminate food. The merchant grain beetle, however, is less cold tolerant and lays only about one-half to two-thirds as many eggs as does the sawtoothed grain beetle. They will help prevent furture infestations in the cracks and crevices. Larger larvae may tunnel into kernels to feed. Copyright © 2020 All-American Pest Control - All Rights Reserved. No contracts! Schedule Now or call us directly (615) 824-8814. Merchant grain beetles are dark brown and have six saw-like teeth on each side of their bodies. ‡ßŠ»˜WŸÚ�QzkëçUéŸr6‡û‡nñCşKq÷ �‹¡–í¡»|�W'D�ݤ©f¾¥Dê|/­ßWd:ìk.N¸×–½¡Ä»ëí©É™ãQwç­vkW«S‘‰¾Ó7™R"v¿owæ. Use Insecticide Aerosols: This is to be done after cleaning and before placing the foodstuffs back on the shelves. Once confused with a kind of beetle that does eat grain, the Merchant beetle was scientifically re-categorized, but the name stuck. Two species common in Maine are the sawtoothed (Oryzaephilus surinamensis) and the merchant (Oryzaephilus mercator) grain beetles. The saw-toothed grain beetle and the merchant grain beetle are slender, flat, brown beetles that are about 1/10 inch long. Thank you! The adults of both species, however, can be distinguished by head shape, eye and body size, and color. 4. The sawtoothed grain beetle is a major pest of stored food products in homes and commercial facilities. Adults live an average of six to ten months, but can live as long as three years. The adults of the sawtoothed grain beetle, on the other hand, cannot fly and must be introduced from contaminated grain. Larvae mature in about two weeks, and construct cocoon-like coverings by joining together small grains or pieces of grain. Both the larval and adult stages of the merchant grain beetle attack all foods of vegetable origin; their preferred foods are oilseed products such as nuts and sunflower seeds. From their name, you might imagine that these tiny beetles like to live in containers of flour, cereal, or rice, and you’d be right. How to Identify Grain Beetles. Grain that is to be stored for longer than six months may need a protective application of an approved insecticide. All-American runs a first class operation. Our professionals can help to find and eliminate all merchant grain beetles from your home through our year-round Perimeter Pest Control Program or our Green Choice Pest Control program. They develop quickly under higher humidity. Have a head, thorax, and abdomen 5. Adult merchant grain beetles are brown in color, they have 6 legs, antennae, and have an oval narrow shaped body with a flattened head. The biology of O. mercator is nearly identical with Oryzaephilus surinamensis(the sawtooth grain beetle). Clean out your pantry and cabinets on a regular basis and make sure to get rid of older or expired dry goods. [1] The biology of O. mercator is nearly identical with Oryzaephilus surinamensis (the sawtooth grain beetle). These pests are attracted to nearly any stored food product, particularly cereals, breakfast foods, flour, dried fruits and meats, pet foods, and many other items. You must have JavaScript enabled in your browser to utilize the functionality of this website. This pest is worldwide in distribution and can tolerate the … LEARN HOW TO STOP THE INVASIVE SPOTTED LANTERNFLY, Coronavirus: Information and resources for the Extension Community, Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org. The most descriptive characteristic of both species is the six saw-like teeth found on either edge of the pronotum. These projections give the beetle its name. [1], The female may produce up to 285 eggs which are laid within a food source. Their small size allows them to easily penetrate the packaged food that they use to feed and breed inside. Description: The adults are very flat, narrow, dark brown in color and 0.1 inch long. View our privacy policy. [2], In commercial grain storage operations bins should be cleaned after emptying in order to prevent any insects from infesting new grain. The larvae emerge and crawl freely about the grain to feed on broken kernels. the sawtoothed grain beetle, in contrast, has smaller eyes and a more triangular shaped head. Grain Beetle larva and adult The adult sawtoothed grain beetle female lays up to 300 eggs, singly or in small batches. [2] This feeding results in the destruction of grain (shrinkage). Identification - Pantry Moths or Pantry Beetles ? May be separated from sawtoothed grain beetles based on the width of the temple (wider in sawtoothed grain beetle). Look in particular the higher fat items in the pantry like cake mixes, chocolate, bran, brown rice, rolled oats and items that have been in storage for a long time. The sawtoothed grain beetle, Oryzaephilus surinamensis (L.), is a widely distributed species commonly found in stored grain. [2] Broken grain kernels are the principal food source but whole kernels may be penetrated and fed on. Merchant grain beetles aren’t dangerous, they are considered to be nuisance pests, they don’t transmit diseases and don’t bite or sting people. Both of these grain beetles are found in kitchens, food processing areas or warehouses. It is small enough to permit it to penetrate packaged foodstuffs in tiny cracks and crevices. By entering your email, you consent to receive communications from Penn State Extension. Pantry pests like Indian meal moths and merchant grain beetles can become difficult to control once they get inside. They are similar to the merchant grain beetle in … I knew that I had chosen the right company when the sales person came to my house with a low pressure sales pitch. Place only a couple of traps in the kitchen or pantry. They can be found in these items if the grain has been broken. Merchant grain beetles are typically not found in grain products, but instead like to attack cereals, cake mixes, macaroni, cookies and chocolate. The merchant grain beetle is somewhat larger and darker brown. We recommend either the Invite Multi-Insect Lure. If merchant grain beetles have infested your home, pantry, and/or kitchen contact the pest control experts All-American Pest Control today. The habits and development of the two species are similar. This includes removal of old grain from corners, floors, and walls. 1. Why do we need this? Although broken kernels are the preferred food of both species, sound kernels will sometimes be penetrated and fed on. Adults are very similar morphologically to sawtoothed grain beetle. [2] Fumigation can be used to eliminate infestations, and grain stored more than 6 months may need an application of pesticide to prevent infestation. They can grow to be one … There are six tiny projections on each side, just behind the head. In Pennsylvania, the sawtoothed grain beetle is not a major problem in stored grains, but can be found coexisting with other insects in contaminated grains. Grain Beetles .

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