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Species Trogoderma variabile - Warehouse Beetle

minute beetle - Trogoderma variabile Trogoderma variabile Trogoderma variabile Trogoderma variabile 4-legged Trogoderma - Trogoderma variabile
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
Superfamily Bostrichoidea
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