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Species Trogoderma variabile - Warehouse Beetle

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Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Bostrichoidea (Carpet, Powder-post and Death-watch Beetles)
Family Dermestidae (Carpet Beetles)
Tribe Anthrenini
Genus Trogoderma
Species variabile (Warehouse Beetle)
Synonyms and other taxonomic changes
parabile Beal
Explanation of Names
Trogoderma variabile Ballion 1878
Sexual dimorphism: antennal club 6- or 7-segmented in males, 4-segmented in females(1)
probably indigenous to central Asia but now found in many parts of the world(2)(3); transcontinental in NA(1); considered adventive in Europe(4)
In Canada: flour/feed mills, warehouses, dwellings, occasionally granaries(1); prefers animal feed, whole kernels of barley and wheat, noodles, oatmeal, wheat germ, whole wheat flour, but may also infest dead animals, candy, cocoa, corn/fish meal, flour, nut meats, and dried spices; bee nests outdoors in Russia(2)
in Europe, wheat any dry vegetal and animal stored products(4)
minor pest in Canada; in other parts of the world (incl. Europe) may be a major/serious pest of stored products (esp. seeds, cereals, legumes, nuts, and other high-protein food)(1)(4)
Internet References
Works Cited
1.Beetles associated with stored products in Canada: An identification guide
Bousquet Y. 1990. Research Branch Agriculture Canada, Publication 1837.
2.Handbook of urban insects and arachnids: A handbook of urban entomology
Robinson W.H. 2005. Cambridge University Press.
3.Háva J. (2018) World catalogue of the Dermestidae
4.Alien terrestrial arthropods of Europe
Roques A., Kenis M., Lees D., Lopez-Vaamonde C., Rabitsch W., Rasplus J.-Y., Roy D., eds. 2010. BioRisk 4 Special Issue; 2 vols., 1028 pp.
5.Canadian Grain Commission: insect pests of stored grain