Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Datasheet

Oryzaephilus surinamensis
(saw toothed grain beetle)

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Datasheet

Oryzaephilus surinamensis (saw toothed grain beetle)

Summary

  • Last modified
  • 22 November 2019
  • Datasheet Type(s)
  • Invasive Species
  • Pest
  • Natural Enemy
  • Preferred Scientific Name
  • Oryzaephilus surinamensis
  • Preferred Common Name
  • saw toothed grain beetle
  • Taxonomic Tree
  • Domain: Eukaryota
  •   Kingdom: Metazoa
  •     Phylum: Arthropoda
  •       Subphylum: Uniramia
  •         Class: Insecta

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Pictures

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PictureTitleCaptionCopyright
Dorsal view of adult O. surinamensis (museum set specimen).
TitleAdult
CaptionDorsal view of adult O. surinamensis (museum set specimen).
Copyright©Georg Goergen/IITA Insect Museum, Cotonou, Benin
Dorsal view of adult O. surinamensis (museum set specimen).
AdultDorsal view of adult O. surinamensis (museum set specimen).©Georg Goergen/IITA Insect Museum, Cotonou, Benin

Identity

Top of page

Preferred Scientific Name

  • Oryzaephilus surinamensis (Linnaeus)

Preferred Common Name

  • saw toothed grain beetle

Other Scientific Names

  • Dermestes surinamensis Linnaeus
  • Silvanus surinamensis Linnaeus
  • Sylvanus surinamensis Linnaeus

International Common Names

  • Spanish: carcoma dentada de los granos; escarabajo dentado de los granos; gorgojillo dentado; gorgojo asserrado de los granos; gorgojo de torax aserrado
  • French: cucujide dentelé des grains; silvain; ver dente des grains
  • Portuguese: caruncho de Suriname

Local Common Names

  • Germany: Getreide-Plattkaefer; Getreide-Schmalkaefer
  • Israel: chipushit mschunent hachaze
  • Italy: Silvano surinamense
  • Japan: Nokogiri-kokunusuto
  • Netherlands: Rijstkever
  • Norway: sagtannet melbille
  • Turkey: testereli bocek

EPPO code

  • ORYZSU (Oryzaephilus surinamensis)

Taxonomic Tree

Top of page
  • Domain: Eukaryota
  •     Kingdom: Metazoa
  •         Phylum: Arthropoda
  •             Subphylum: Uniramia
  •                 Class: Insecta
  •                     Order: Coleoptera
  •                         Family: Silvanidae
  •                             Genus: Oryzaephilus
  •                                 Species: Oryzaephilus surinamensis

Notes on Taxonomy and Nomenclature

Top of page Although now placed in the family Silvanidae, these beetles were previously included in the Cucujidae. Only O. surinamensis (Linnaeus) and O. mercator (Fauvel) are of any importance as pests in this small family of beetles although other species such as Ahasverus advena (Waltl) and Cathartus quadricollis (Guerin) may be common in the humid tropics. Descriptions of several Oryzaephilus species found in stored products are given in Halstead (1980). For identification of the genus and the more common storage species, O. mercator and O. surinamensis, refer to the keys of Haines (1991) or Gorham (1991).

Description

Top of page Larva

The larvae of O. surinamensis and O. mercator are white, elongate, somewhat flattened and about 4-5 mm long when fully grown; they do not have urogomphi.

Adult

Adults of O. surinamensis and O. mercator are slender, parallel-sided, dark-brown beetles, 2.5-3.5 mm long. The antennae are relatively short and weakly clubbed, and the prothorax has six distinctive tooth-like projections along each side.

Distribution

Top of page O. surinamensis is cosmopolitan; Oryzaephilus mercator is mostly found in warmer, temperate and tropical regions.

Distribution Table

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The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

Last updated: 10 Jan 2020
Continent/Country/Region Distribution Last Reported Origin First Reported Invasive Reference Notes

Africa

AlgeriaPresentChamp and Dyte (1976)
AngolaPresentPacavira et al. (2006)
EgyptPresentAlfazairy et al. (2003)
EthiopiaPresentChamp and Dyte (1976)
MalawiPresentChamp and Dyte (1976)
MaliPresentCABI (Undated a)
MoroccoPresentChamp and Dyte (1976)
MozambiquePresentChamp and Dyte (1976)
NamibiaPresentStejskal et al. (2006)
NigeriaPresentChamp and Dyte (1976)
SomaliaPresentChamp and Dyte (1976)
South AfricaPresentChamp and Dyte (1976)
ZambiaPresentChamp and Dyte (1976)
ZimbabwePresentChamp and Dyte (1976)

Asia

AzerbaijanPresentChamp and Dyte (1976)
BahrainPresentChamp and Dyte (1976)
BangladeshPresentMills (1983)
BhutanPresentCABI (Undated a)
BruneiPresentWaterhouse (1993)
CambodiaPresentWaterhouse (1993)
ChinaPresentChamp and Dyte (1976)
Hong KongPresentChamp and Dyte (1976)
IndiaPresentChamp and Dyte (1976)
-BiharPresentSinha and Sinha (1992)
-HaryanaPresentChaudhary and Mahla (2001)
-Himachal PradeshPresentRamesh Lal and Vaidya (2001)
-KarnatakaPresentRajendran (1989)
-KeralaPresentKumari et al. (1992)
-OdishaPresentCABI (Undated)Original citation: Prakash and Kauraw (1982, recd. 1985)
IndonesiaPresentChamp and Dyte (1976); APPPC (1987); Waterhouse (1993)
IranPresentChamp and Dyte (1976)
IraqPresentChamp and Dyte (1976)
IsraelPresentChamp and Dyte (1976)
JapanPresentChamp and Dyte (1976)
LaosPresentWaterhouse (1993)
MalaysiaPresentWaterhouse (1993)
MyanmarPresentChamp and Dyte (1976); Waterhouse (1993)
NepalPresentChamp and Dyte (1976)
OmanPresentAl-Zadjali et al. (2006)
PakistanPresentChamp and Dyte (1976)
PhilippinesPresentCaliboso et al. (1985)
Saudi ArabiaPresentChamp and Dyte (1976)
SingaporePresent, WidespreadWaterhouse (1993); AVA (2001)
South KoreaPresentChamp and Dyte (1976)
Sri LankaPresentGanesalingam (1976)
SyriaPresentChamp and Dyte (1976)
TaiwanPresentTzeng et al. (2006)
ThailandPresentChamp and Dyte (1976); APPPC (1987); Waterhouse (1993)
TurkeyPresentChamp and Dyte (1976)
VietnamPresentWaterhouse (1993)
YemenPresentChamp and Dyte (1976)

Europe

AustriaPresentKlapal (2002)
BelgiumPresentDesimpelaere (1996)
BulgariaPresentChamp and Dyte (1976)
CroatiaPresentHamel (2007)
CyprusPresentChamp and Dyte (1976)
DenmarkPresentHallas et al. (1977)
Federal Republic of YugoslaviaPresentStojanovic and Kosovac (1974)
FrancePresentCABI (Undated a)
GermanyPresentAdler (2007)
GreecePresentChamp and Dyte (1976)
IcelandPresentCABI (Undated a)
ItalyPresentTrematerra and Sciarretta (2004)
NetherlandsPresentChamp and Dyte (1976)
PolandPresentChamp and Dyte (1976)
PortugalPresentChamp and Dyte (1976)
RomaniaPresentChamp and Dyte (1976)
RussiaPresentLabinov and Egorov (2003)
SpainPresentChamp and Dyte (1976)
SwitzerlandPresentBüchi (1989)
United KingdomPresentChamp and Dyte (1976)

North America

CanadaPresentChamp and Dyte (1976)
-ManitobaPresentSmith (1985)
El SalvadorPresentChamp and Dyte (1976)
GreenlandPresentCABI (Undated a)
GuadeloupePresentChamp and Dyte (1976)
JamaicaPresentChamp and Dyte (1976)
MexicoPresentChamp and Dyte (1976)
Trinidad and TobagoPresentChamp and Dyte (1976)
United StatesPresentChamp and Dyte (1976)
-ArkansasPresentRanalli et al. (2002)
-CaliforniaPresentOlson et al. (1987)
-GeorgiaPresentArbogast and Mullen (1988)
-IdahoPresentCABI (Undated)Original citation: Sandvol et al. (1984, recd. 1986)
-KansasPresentReed et al. (1998)
-MinnesotaPresentSubramanyam and Harein (1990)
-South CarolinaPresentArbogast and Mullen (1988)
-South DakotaPresentIngemansen et al. (1986)

Oceania

AustraliaPresentChamp and Dyte (1976)
-New South WalesPresentWallbank (1996)
-QueenslandPresentCollins et al. (1993)
-VictoriaPresentBuchanan et al. (1984)
New CaledoniaPresentCABI (Undated a)

South America

ArgentinaPresentChamp and Dyte (1976)
BrazilPresentChamp and Dyte (1976)
-PernambucoPresentMachado et al. (2008)
-PiauiPresentSilva (2001)
-Rio de JaneiroPresentGredilha et al. (2005)
-Santa CatarinaPresentCABI (Undated)Original citation: Trematerra et al. (2004)
ChilePresentChamp and Dyte (1976)
ColombiaPresentChamp and Dyte (1976)
French GuianaPresentChamp and Dyte (1976)
GuyanaPresentChamp and Dyte (1976)
PeruPresentChamp and Dyte (1976)

Habitat List

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CategorySub-CategoryHabitatPresenceStatus
Terrestrial

Hosts/Species Affected

Top of page O. surinamensis is a common secondary pest of cereals and cereal products; O. mercator is more common on oilseeds, though it is also sometimes found on cereals. Both species may be found on copra, spices, nuts and dried fruit. O. surinamensis is prevalent on white milled rice; O. mercator is common on brown rice and rice bran.

Growth Stages

Top of page Post-harvest

Symptoms

Top of page Adult beetles of O. surinamensis and O. mercator can be seen moving rapidly over stored food. The immature stages are inconspicuous.

List of Symptoms/Signs

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SignLife StagesType
Seeds / external feeding

Biology and Ecology

Top of page Oryzaephilus spp. are typical secondary pests, attacking previously damaged or broken kernels to feed, especially on the germ. The larvae also attack the germ in whole cereal grains, thereby altering the nutritional content and reducing the percentage germination. Adults and larvae are able to enter small cracks, so they can often attack packaged food or nuts in shell. On copra, the larvae tend to feed close beneath the outer skin. The attack of Oryzaephilus spp. is facilitated by the broken kernels that result from handling procedures or the feeding activity of primary pests. Maize kernels damaged by the primary pest Sitotroga cereallella are a more suitable medium for development than mechanically damaged kernels (Weston and Rattlingourd, 2000). Likewise, wheat grain previously infested by the secondary pests Tribolium castaneum or Tribolium confusum (Trematerra et al., 2000) are more attractive than mechanically split kernels.

The life history of O. surinamensis and O. mercator has been described by Howe (1956). Eggs are laid loosely on foodstuffs at a peak rate of 6-10 per day in O. surinamensis, and 3 per day in O. mercator. Up to 375 eggs are laid by an O. surinamensis female and up to 200 by an O. mercator female. The larvae feed within the mass of produce. The larvae moult 2-4 times depending on conditions. On a diet of wheatfeed, the life cycle of Oryzaephilus spp. varies from about 20 days to more than 80 days at temperatures of 17.5-37.5°C and 10-90% RH. Optimum conditions for development are 30-35°C and 70-90% RH for O. surinamensis, and 30-33°C and 70% RH for O. mercator. O. surinamensis is more tolerant of extremes in temperature and humidity than O. mercator. For example, O. surinamensis can survive temperatures of 20-37°C at <10% RH, whereas O. mercator can only survive at 25-32.5°C at this humidity. Adult O. surinamensis have been reported to survive sub-zero temperatures for up to 4 days; under these and less extreme conditions (temperatures down to 5°C), O. mercator did not survive. In temperate areas, O. surinamensis can survive winters in unheated stores.

Adult Oryzaephilus spp. are winged but rarely fly. They tend to wander from the stored food into crevices, ducts and roofing spaces, from which they are difficult to eradicate; they can often be found beneath the bark of trees near to stores. Oryzaephilus spp. have not been recorded on grain in the field before harvest.

Natural enemies

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Natural enemyTypeLife stagesSpecificityReferencesBiological control inBiological control on
Amphibolus venator Predator
Anisopteromalus calandrae Parasite
Beauveria bassiana Pathogen grain
Blattisocius tarsalis Predator
Cephalonomia meridionalis Parasite Larvae
Cephalonomia tarsalis Parasite Larvae
Helicosporidium parasihcum Pathogen Adults/Larvae/Nymphs/Pupae
Holepyris sylvanidis Parasite Larvae
Lyctocoris campestris Predator
Mattesia oryzaephili Pathogen Adults/Larvae/Nymphs/Pupae
Nosema oryzaephili Pathogen Adults/Larvae/Nymphs/Pupae
Nosema whitei Pathogen Adults/Larvae/Nymphs/Pupae
Tenebroides mauritanicus Predator
Tribolium castaneum Predator
Xylocoris cursitans Predator
Xylocoris flavipes Predator

Notes on Natural Enemies

Top of page Oryzaephilus spp. are attacked by a wide range of organisms, including the protozoans Nosema oryzaephili, N. whitei, Mattesia oryzaephili and Helicosporidium parasihcum. Granulosis virus from the moth Plodia interpunctella has been shown to affect Oryzaephilus in the laboratory. The mite, Pyemotes tritici, can cause high mortality on all stages of O. mercator, especially on intact grain under experimental conditions. The hemipterans, Xylocoris cursitans and X. flavipes, have been reported as predators of Oryzaephilus spp.

Parasitic Hymenoptera of the family Bethylidae parasitize Oryzaephilus: the records include Cephalonomia meridionalis, C. tarsalis and Holepyris sylvanidis.

Pathway Vectors

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VectorNotesLong DistanceLocalReferences
Land vehiclesTransported in national and international grain trade Yes

Plant Trade

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Plant parts liable to carry the pest in trade/transportPest stagesBorne internallyBorne externallyVisibility of pest or symptoms
Fruits (inc. pods) adults; eggs; larvae; pupae Yes Pest or symptoms usually visible to the naked eye
Roots adults; eggs; larvae; pupae Yes Pest or symptoms usually visible to the naked eye
True seeds (inc. grain) adults; eggs; larvae; pupae Yes Pest or symptoms usually visible to the naked eye
Plant parts not known to carry the pest in trade/transport
Bark
Bulbs/Tubers/Corms/Rhizomes
Flowers/Inflorescences/Cones/Calyx
Growing medium accompanying plants
Leaves
Seedlings/Micropropagated plants
Stems (above ground)/Shoots/Trunks/Branches
Wood

Impact Summary

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CategoryImpact
Animal/plant collections None
Animal/plant products None
Biodiversity (generally) None
Crop production None
Environment (generally) None
Fisheries / aquaculture None
Forestry production None
Human health None
Livestock production None
Native fauna None
Native flora None
Rare/protected species None
Tourism None
Trade/international relations None
Transport/travel None

Impact

Top of page Oryzaephilus spp. are not associated with any substantial weight loss in stored food products; however, infestations by these pests can lead to substantial contamination with frass and dead bodies. Thus, quality deterioration is an important issue.

Detection and Inspection

Top of page Pitfall traps are unsuitable for the detection of O. surinamensis and O. mercator as these insects are able to climb on clean glass. They do enter refuge traps, such as strips of corrugated cardboard, or bag traps containing a suitable food bait (Hodges et al., 1986). A recently devised grain probe that automatically counts pests falling into it offers a convenient means of monitoring the pest in grain bulks (Epsky and Shuman, 2001).

Prevention and Control

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Due to the variable regulations around (de)registration of pesticides, your national list of registered pesticides or relevant authority should be consulted to determine which products are legally allowed for use in your country when considering chemical control. Pesticides should always be used in a lawful manner, consistent with the product's label.

Cultural Control and Sanitary Methods

Good store hygiene plays an important role in limiting infestation by Oryzaephilus spp. The removal of infested residues from the previous season's harvest is essential, as is general hygiene in stores such as ensuring that all spillages are removed and all cracks and crevices filled. Infestations may also be limited by the storage of good quality grains such as whole cereals with fewer broken grains and dockage, and milled rice with a high milling degree (at least 95%) and few broken grains.

Biological Control

Biological control has not been practised against Oryzaephilus spp. The hemipterans, Xylocoris cursitans and X. flavipes, have been used successfully in field trials for biological control of residual populations of O. surinamensis.

Chemical Control

Grain may be protected by the admixture of insecticide. Oryzaephilus spp. are susceptible to all those insecticides normally used on stored food. Grain stocks may be fumigated with phosphine to eliminate an existing infestation but these treatments provide no protection against re-infestation. A variety of diatomaceous earths have been tested against Oryzaephilus surinamesis (Fields and Korunic, 2000; Arthur, 2001) and these offer potential for the control of these species even at grain moisture contents up to 17% (Cook and Armitage, 2000).

References

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Adler C, 2007. . http://www.iobc-wprs.org

Aitken AD, 1975. Insect travellers. Volume I. Coleoptera. Technical Bulletin, Ministry of Agriculture, Fisheries and Food, No. 31, 191 pp.

Alfazairy AA; Hendi R; El-Minshawy AM; Karam HH, 2003. Entomopathogenic agents isolated from 19 coleopteran insect pests in Egypt. Egyptian Journal of Biological Pest Control, 13(1/2):125.

Al-Zadjali TS; Abd-Allah FF; El-Haidari HS, 2006. Insect pests attacking date palms and dates in Sultanate of Oman. Egyptian Journal of Agricultural Research, 84(1):51-59.

APPPC, 1987. Insect pests of economic significance affecting major crops of the countries in Asia and the Pacific region. Technical Document No. 135. Bangkok, Thailand: Regional Office for Asia and the Pacific region (RAPA).

Arbogast RT; Mullen MA, 1988. Insect succession in a stored-corn ecosystem in southeast Georgia. Annals of the Entomological Society of America, 81(6):899-912.

Arbogast RT; Throne JE, 1997. Insect infestation of farm-stored maize in South Carolina: towards characterization of a habitat. Journal of Stored Products Research, 33(3):187-198; 30 ref.

Arthur FH, 2001. Immediate and delayed mortality of Oryzaephilus surinamensis (L.) exposed on wheat treated with diatomaceous earth: effects of temperature, relative humidity, and exposure interval. Journal of Stored Products Research, 37(1):13-21; 17 ref.

Association de Coordination Technique Agricole, 1982. The pests of stored grain. Les ravageurs des grains entreposes. Association de Coordination Technique Agricole Paris France, 8 pp.

AVA, 2001. Diagnostic records of the Plant Health Diagnostic Services, Plant Health Centre, Agri-food & Veterinary Authority, Singapore.

Buchanan GA; McDonald G; Evans PWC, 1984. Control of Drosophila spp., Carpophilus spp. and Ephestia figulilella (Gregson) in sultana grapes grown for dried fruit. Australian Journal of Experimental Agriculture and Animal Husbandry, 24(126):440-446.

Buchi R, 1989. Stored products pests in grain stores and mills in Switzerland. (Vorratsschädlinge in Getreidelagern und Mühlen in der Schweiz.) Landwirtschaft Schweiz, 2(10):587-592.

Caliboso MF; Sayaboc PD; Amoranto MR, 1985. Pest problems and the use of pesticides in grain storage in the Philippines. ACIAR Proceedings Series, Australian Centre for International Agricultural Research, No. 14:17-29

Champ BR; Dyte CE, 1976. Report of the FAO global survey of pesticide susceptibility of stored grain pests. FAO Plant Production and Protection Series No. 5. Rome, Italy: Food and Agriculture Organisation of the United Nations.

Chaudhary SD; Mahla JC, 2001. Insect-pests infesting stored wheat in different climatic regions of Haryana. Crop Research (Hisar), 21(3):384-386.

Collins PJ; Lambkin TM; Bridgeman BW; Pulvirenti C, 1993. Resistance to grain-protectant insecticides in coleopterous pests of stored cereals in Queensland, Australia. Journal of Economic Entomology, 86(2):239-245

Cook DA; Armitage DM, 2000. Efficacy of a diatomaceous earth against mite and insect populations in small bins of wheat under conditions of low temperature and high humidity. Pest Management Science, 56(7):591-596; 32 ref.

Desimpelaere P, 1996. Insect pests. Protection of stored grain. Agricontact, No. 287:1-4.

Epsky ND; Shuman D, 2001. Laboratory evaluation of an improved electronic grain probe insect counter. Journal of Stored Products Research, 37(2):187-197; 12 ref.

Fields P; Korunic Z, 2000. The effects of grain moisture content and temperature on the efficacy of diatomaceous earths from different geographical locations against stored-product beetles. Journal of Stored Products Research, 36(1):1-13.

Ganesalingam VK, 1976. A study of insects in four rice stores in the Kandy district in Sri Lanka. Ceylon Journal of Science, Biological Sciences, 12(1):30-46.

Gorham JR, 1991. Insect and mite pests in food. An illustrated key. Vol. 1 and 2. US Department of Agriculture, Agriculture Handbook Washington, DC, USA, No. 655:vii + 767 pp.

Gredilha R; Saavedra PR; Guerim L; Lima AFde; Serra-Freire NM, 2005. Occurrence of Oryzaephilus surinamensis Linnaeus, 1758 (Coleoptera:Cucujidae) and Necrobia rufipes De Geer, 1775 (Coleoptera:Cleridae) infesting pet food. (Ocorrência de Oryzaephilus surinamensis Linnaeus, 1758 (Coleoptera: Cucujidae) e Necrobia rufipes De Geer, 1775 (Coleoptera:Cleridae) infestando rações de animais domésticos.) Entomología y Vectores, 12(1):95-103.

Haines CP (ed.), 1991. Insects and arachnids of tropical stored products: their biology and identification (a training manual). Chatham, UK: Natural Resources Institute, Ed. 2, 246 pp.

Hallas T; Mourier H; Winding O, 1977. Seasonal variation and trends for some indoor insects in Denmark. (Arstidsvariationer og tendenser for nogle indendoers insekter i Danmark.) Entomologiske Meddelelser, 45(2):77-88.

Halstead DGH, 1980. A revision of the genus oryzaephilus Ganglbauer, including descriptions of related genera (Coleoptera: Silvanidae). Zoological Journal of the Linnean Society, 69(4):271-374

Hamel D, 2007. Storing maize in stores and protection from pests. (Cuvanje kukuruza u skladi?tu i za?tita od ?tetnika.) Glasilo Biljne Za?tite, 7(5):344-349.

Hodges RJ; Halid H; Rees DP; Meik J; Sarjono J, 1985. Insect traps tested as an aid to pest management in milled rice stores. Journal of Stored Products Research, 21(4):215-229

Howe RW, 1956. The biology of the two common storage species of Oryzaephilus (Coleoptera, Cucujidae). Annals of Applied Biology, 44(2):341-355.

Ingemansen JA; Reeves DL; Walstrom RJ, 1986. Factors influencing stored-oat insect populations in South Dakota. Journal of Economic Entomology, 79(2):518-522.

Klapal H, 2002. .

Kumari TN; Mammen KV; Mohandas N, 1992. Occurrence and nature of damage caused by pests of stored copra in Kerala. Indian Coconut Journal (Cochin), 23(7):7-12.

Labinov SA; Egorov VL, 2003. What the investigation showed. Zashchita i Karantin Rastenii, No.11:33-34.

Machado EHL; Alves LC; Faustino MAG; Dezotti CH, 2008. Frequency of stored-insect products in pet food traded in the City of Recife-PE. (Freqüência de insetos-praga em alimento industrializado para cães comercializado na cidade de Recife-PE.) Medicina Veterinária (Brasil), 2(1):10-16. http://www.dmv.ufrpe.br/revista

Mills KA, 1983. Resistance to the fumigant hydrogen phosphide in some stored-product species associated with repeated inadequate treatments. Mitteilungen der Deutschen Gesellschaft für Allgemeine und Angewandte Entomologie, 4(1/3):98-101.

Olson AR; Bryce JR; Lara JR; Madenjian JJ; Potter RW; Reynolds GM; Zimmerman ML, 1987. Survey of stored-product and other economic pests in import warehouses in Los Angeles. Journal of Economic Entomology, 80(2):455-459

Pacavira R; Mata O; Manuel A; Pereira AP; Mexia A, 2006. Detection of stored products pests by pheromone traps in seven warehouses in Luanda/Angola. In: Proceedings of the 9th International Working Conference on Stored-Product Protection, ABRAPOS, Passo Fundo, RS, Brazil, 15-18 October 2006 [ed. by Lorini, I.\Bacaltchuk, B.\Beckel, H.\Deckers, D.\Sundfeld, E.\Santos, J. P. dos\Biagi, J. D.\Celaro, J. C.\Faroni, L. R. D.\Bortolini, L. de O. F.\Sartori, M. R.\Elias, M. C.\Guedes, R. N. C.\Fonseca, R. G. da\Scussel, V. M.]. Passo Fundo, Brazil: Brazilian Post-Harvest Association (ABRAPOS), 1157-1165. http://bru.gmprc.ksu.edu/proj/iwcspp/pdf/9/6335.pdf

Prakash A; Kauraw LP, 1982. Studies on insects, mites and fungal infestation in rural and farm stored rice in Orissa. Journal of Research, Assam Agricultural University, 3(2):190-196; 13 ref.

Rajendran S, 1989. .

Ramesh Lal; Vaidya DN, 2001. Weight loss in maize grains due to insect infestation in different storage structures. Insect Environment, 7(1):37-39.

Ranalli RP; Howell TA Jr; Arthur FH; Gardisser DR, 2002. Controlled ambient aeration during rice storage for temperature and insect control. Applied Engineering in Agriculture, 18(4):485-490.

Reed C; Arthur FH; Trigo-Stockli D, 1998. Conditioning practices and their effects on infestation and quality of corn [maize] stored on Kansas farms. Applied Engineering in Agriculture, 14(6):623-630.

Sandvol L; Halderson J; Finnegan B; Wilson J; Whitmore J; Sharp W; Bechinski E; 1984, recd. 1986. Demonstration of electronic monitoring and management of stored grain. In: Proceedings of the Third International Working Conference on Stored-Product Entomology. October 23- 28, 1983, Kansas State University, Manhattan, Kansas USA Manhattan, Kansas, USA: Kansas State University, 669-671.

Silva PHSda, 2001. Insects associated with babaçu (Orbignya spp.) in the state of Piauí. (Insetos associados ao babaçu (Orbignya spp.) no Estado do Piauí.) Documentos - Embrapa Meio-Norte, No.63:23 pp.

Sinha KK; Sinha AK, 1992. Impact of stored grain pests on seed deterioration and aflatoxin contamination in maize. Journal of Stored Products Research, 28(3):211-219; 29 ref.

Smith LB, 1985. Insect infestation in grain loaded in railroad cars at primary elevators in southern Manitoba, Canada. Journal of Economic Entomology, 78(3):531-534.

Stejskal V; Kosina P; Kanyomeka L, 2006. Arthropod pests and their natural enemies in stored crops in northern Namibia. Journal of Pest Science, 79(1):51-55.

Stojanovic T; Kosovac V, 1974. Degree of insect infestation of stored sunflower in Banat in the period 1966-1974. Zastita Bilja, 25(128/129):183-192

Subramanyam B; Harein PK, 1990. Status of malathion and pirimiphos-methyl resistance in adults of red flour beetle and sawtoothed grain beetle infesting farm-stored corn in Minnesota. Journal of Agricultural Entomology, 7(2):127-136.

Trematerra P; Paula MCZ; Sciarretta A; Lazzari SMN, 2004. Spatio-temporal analysis of insect pests infesting a paddy rice storage facility. Neotropical Entomology, 33(4):469-479.

Trematerra P; Sciarreta A; Tamasi E, 2000. Behavioural responses of Oryzaephilus surinamensis, Tribolium castaneum and Tribolium confusum to naturally and artificially damaged durum wheat kernels. Entomologia Experimentalis et Applicata, 94(2):195-200; 23 ref.

Trematerra P; Sciarretta A, 2004. Spatial distribution of some beetles infesting a feed mill with spatio-temporal dynamics of Oryzaephilus surinamensis, Tribolium castaneum and Tribolium confusum. Journal of Stored Products Research, 40(4):363-377. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T8Y-48DXN7D-4&_user=3796239&_handle=V-WA-A-W-E-MsSAYWW-UUW-U-AAWBZZDYUY-AAWAWVYZUY-WAEUVWZYA-E-U&_fmt=summary&_coverDate=12%2F31%2F2004&_rdoc=2&_orig=browse&_srch=%23toc%235099%232004%23999599995%23493136!&_cdi=5099&view=c&_acct=C000000593&_version=1&_urlVersion=0&_userid=3796239&md5=158860953bc5cce976fbea207b13ddf7

Tzeng CC; Peng WK; Kao SS, 2006. Survey of insect populations in stored rice with blacklight-blue fluorescent light trap. Plant Protection Bulletin (Taipei), 48(4):297-309. http://www.pps.org.tw

Wallbank BE, 1996. Resistance to organophosphorus grain protectants in Oryzaephilus surinamensis (L.) (Coleoptera: Silvanidae) from off-farm grain storages in New South Wales. Australian Journal of Entomology, 35(3):193-195.

Waterhouse DF, 1993. The Major Arthropod Pests and Weeds of Agriculture in Southeast Asia. ACIAR Monograph No. 21. Canberra, Australia: Australian Centre for International Agricultural Research, 141 pp.

Weston PA; Rattlingourd PL, 2000. Progeny production by Tribolium castaneum (Coleoptera: Tenebrionidae) and Oryzaephilus surinamensis (Coleoptera: Silvanidae) on maize previously infested by Sitotroga cerealella (Lepidoptera: Gelechiidae). Journal of Economic Entomology, 93(2):533-536; 18 ref.

Distribution References

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Trematerra P, Sciarretta A, 2004. Spatial distribution of some beetles infesting a feed mill with spatio-temporal dynamics of Oryzaephilus surinamensis, Tribolium castaneum and Tribolium confusum. Journal of Stored Products Research. 40 (4), 363-377. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T8Y-48DXN7D-4&_user=3796239&_handle=V-WA-A-W-E-MsSAYWW-UUW-U-AAWBZZDYUY-AAWAWVYZUY-WAEUVWZYA-E-U&_fmt=summary&_coverDate=12%2F31%2F2004&_rdoc=2&_orig=browse&_srch=%23toc%235099%232004%23999599995%23493136!&_cdi=5099&view=c&_acct=C000000593&_version=1&_urlVersion=0&_userid=3796239&md5=158860953bc5cce976fbea207b13ddf7 DOI:10.1016/S0022-474X(03)00027-4

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