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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

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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 Beetle - Rhyzopertha dominica tiny beetle - Rhyzopertha dominica Rhyzopertha dominica? - Rhyzopertha dominica
Classification
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 Bostrichidae (Horned Powder-post Beetles)
Subfamily Dinoderinae
Genus Rhyzopertha
Species dominica (Lesser Grain Borer)
Explanation of Names
Rhyzopertha dominica (Fabricius 1792)
Size
2-3 mm
Range
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)
Habitat
mainly confined to heated buildings in the temperate regions(2)
Food
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)
Remarks
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)
Internet References