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Species Rhyzopertha dominica - Lesser Grain Borer

Rhyzopertha dominica (Fab.) - Rhyzopertha dominica 050812Beetle1 - Rhyzopertha dominica black speck - Rhyzopertha dominica Beetle - Rhyzopertha dominica Beetle - Rhyzopertha dominica tiny beetle - Rhyzopertha dominica Rhyzopertha dominica? - Rhyzopertha dominica Rhyzopertha dominica? - Rhyzopertha dominica
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
Superfamily Bostrichoidea
Family Bostrichidae (Horned Powder-post Beetles)
Subfamily Dinoderinae
Genus Rhyzopertha
Species dominica (Lesser Grain Borer)
Synonyms and other taxonomic changes
Rhyzopertha dominica (Fabricius)
Orig. Comb: Synodendron dominica Fabricius, 1792
2-3 mm
across Canada (NS-BC)(1) and throughout the grain-producing areas of the US(2) - Map (3), mostly ne. US, & Great Plains to Panama / W. Indies. native to tropical Asia, now cosmopolitan(4)
mainly confined to heated buildings in the temperate regions(2)
serious pest of both whole kernel stored grain and cereal products
Life Cycle
Larvae develop in whole grain and remain within the kernel through 4-5 instars; on wholemeal there are 2–7 instars(5)
Commonly infests flour, macaroni, beans, chickpeas, seeds, edible bulbs, grains, sometimes wood; damage can be considerable because adults and larvae feed on the surface and interior of grains. Adults readily fly but their flight is not well oriented, and air currents carry them.(5)
Print References
Howe, R.W. (1950) The development of Rhizopertha dominica (F.) (Col., Bostrichidae) under constant conditions. Entomol. Mon. Mag. 86: 15.
Potter, C. (1935) The biology and distribution of Rhizopertha dominica (Fab.). Transactions of the Royal Entomological Society of London, 83: 449–482.
Internet References