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Department of Bioagricultural Sciences and Pest Management Fort Collins, CO 80523-1177 Sawtoothed and Merchant Grain Beetles Sawtoothed grain beetle adults and larvae (Clemson Sawtoothed grain beetle Sawtoothed grain beetle, damage University/IPM Images) (Gary Alpert/IPM Images) (Clemson University/IPM Images) Typical Location When Observed: In the home, infesting any of a variety of dry foods. The sawtoothed grain beetle prefers grains and grain products, while the merchant grain beetle is more likely to be found in oil seeds and processed cereal grains. Importance/Damage: These beetles are very common in dry, home-stored foods. The food can be ruined if the infestation is allowed to continue. Distinguishing Features: Both of these small (1/10 inch) beetles have a row of six projections along the edge of the thorax, just behind the head. The shape of the head and the position of the eyes can be used to tell sawtoothed grain beetle from merchant grain beetle. Look-Alikes: Flour beetles, flat grain beetle, rusty grain beetle. General Life History and Habits: Eggs are laid in or on dried foods. Adults and larvae feed on broken bits of grain and processed foods. The adults live several months to several years. Resources: For more information see Extension Fact Sheet 5.501, Insect Pests of Home-stored Foods, and Extension Bulletin 557A, Household Insects of the Rocky Mountain States. Scientific Name: Oryzaephilus surinamensis and O. mercator Order: Coleoptera (beetles) Actual Length Family: Silvanidae (flat bark beetles) Version: July 31, 2009 Whitney Cranshaw ([email protected]) Frank Peairs ([email protected]).

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Biology of the Saw-Toothed Grain Beetle, Oryzaephilus Surinamensis Linné1
BIOLOGY OF THE SAW-TOOTHED GRAIN BEETLE, ORYZAEPHILUS SURINAMENSIS LINNÉ1 By E. A. BACK, Entomologist in Charge, and R. T. COTTON, Entomologist, Stored-Product Insect Investigations, Bureau of Entomology, United States Department of Agriculture INTRODUCTION The saw-toothed grain beetle, Oryzaephilus surinamensis Linné, one of the best known of the insects that attack stored foods, is cosmo- politan in distribution and is likely to be found in almost any stored food of vegetable origin. Although it has been known to scientists for more than 150 years, the statement by Chittenden (S, pp. 16-17)2 that "during the warmest summer months the life cycle requires but 24 days; in early spring, from 6 to 10 weeks" is practically the extent of the information that the present writers have been able to find in the literature on the biology of this important pest. HISTORICAL Naturalists probably were familiar with this beetle long before its description by Linné in 1767 {25). Redi {29, Talle XVII), in 1671, mentioned and figured an insect which resembles Oryzaephilus surinamensis, and which Wheeler {36) considers to be this or a closely allied species. Linné received specimens of this insect from Surinam (Dutch Guiana) and for that reason gave it the specific name surina- mensis. Comparatively little seems to have been written by the early scientists on the biology of this insect. Westwood {35, p. 153) reported in 1839 that he had discovered it in sugar, and stated in 1848 that he had observed both larvae and adults floating in tea or coffee sweetened with infested sugar.
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Available online a t www.pelagiaresearchlibrary.com Pelagia Research Library European Journal of Experimental Biology, 2015, 5(5):98-101 ISSN: 2248 –9215 CODEN (USA): EJEBAU Plant extracts controls Oryzaephilus surinamensis by showing repellency behavior Neetu Kachhwaha*, Geeta Devi Meena and Shashi Meena Centre for Advanced Studies in Zoology, University of Rajasthan, Jaipur, Rajasthan (India) _____________________________________________________________________________________________ ABSTRACT Saw-toothed grain beetle, flat grain beetle and red flour beetle are major among stored grain insect population. These insect destroy at least 15% of the food produced in only India as they feed almost entirely on the germ of the grain reducing its quality. For selection of control measure advantages, disadvantages and safety towards grain quality must be the first consideration. Plants are composed of many constituents some of them are insecticidal, attractants, repellent, anti-feedants, hormone mimics and hormone antagonist. Repellent behavior is one of the important measures as it does not kill the insect but protect the grain from infestation. Here some plant extract Punica gronatum, Chenopodium album, Vitex negundo and Maytenus emarginata and their combinations were applied to test insect Oryzaephilus surinamensis at the dose of 1, 2.5 and 5ml /100 gms of cashew nuts to control them through repellent behavior. Key words: plant extract, repellency , Oryzaephilus surinamensis _____________________________________________________________________________________________ INTRODUCTION Oryzaephilus surinamensis is one of the serious pests of many kinds of food like dry fruits, spices, nuts, cereal and other cereal products. Oryzaephilus surinamensis is a Coleopteran of family Silvanidae commonly called as saw toothed grain beetle/ flat grain beetle as it is dorso-ventrally flattened body consisting of saw like projections on the thorax region.
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University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida 2016 Checklists of Cucujidae, Laemophloeidae, and Silvanidae (Coleoptera: Cucujoidea) from Iran Michael C. Thomas Florida State Collection of Arthropods, [email protected] Hassan Ghahari Islamic Azad University, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/insectamundi Part of the Ecology and Evolutionary Biology Commons, and the Entomology Commons Thomas, Michael C. and Ghahari, Hassan, "Checklists of Cucujidae, Laemophloeidae, and Silvanidae (Coleoptera: Cucujoidea) from Iran" (2016). Insecta Mundi. 1002. http://digitalcommons.unl.edu/insectamundi/1002 This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. INSECTA MUNDI A Journal of World Insect Systematics 0498 Checklists of Cucujidae, Laemophloeidae, and Silvanidae (Coleoptera: Cucujoidea) from Iran Michael C. Thomas Florida State Collection of Arthropods Florida Department of Agriculture and Consumer Services P.O. Box 147100 Gainesville, FL 32614-7100 Hassan Ghahari Department of Plant Protection Yadegar - e-Imam Khomeini (RAH) Shahre Rey Branch Islamic Azad University Tehran, Iran Date of Issue: August 26, 2016 CENTER FOR SYSTEMATIC ENTOMOLOGY, INC., Gainesville, FL Michael C. Thomas and Hassan Ghahari Checklists of Cucujidae, Laemophloeidae, and Silvanidae (Coleoptera: Cucujoidea) from Iran Insecta Mundi 0498: 1-12 ZooBank Registered: LSID: urn:lsid:zoobank.org:pub:8F4C729F-E604-4E32-B592-E82C3FE0C00A Published in 2016 by Center for Systematic Entomology, Inc. P. O.
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