False chinch bug, Nysius raphanus Order: HemipteraFamily: Lygaeidae Description False chinch bug adults are about 3-4 mm (1/8 – 1/6 inches) long and grayish brown with slender bodies and long antennae. The wings form a distinct x-shaped mark on the back. Nymphs...
Spider mites in wheat and corn Order: AcariFamily: Tetranychidae Description and life history Brown wheat mite (Petrobia latens) In Colorado, brown wheat mites are most active on drought stressed winter wheat grown in the Eastern Plains. Brown wheat mite populations...
Alfalfa weevil, Hypera postica Order: ColeopteraFamily: Curculionidae Description The alfalfa weevil was introduced to the United States from Eurasia and North Africa. In the United States, this pest was first detected in Utah in 1904 and is the most destructive...
Black grass bugs Order: HemipteraFamily: Miridae Description Black grass bugs are an assemblage of insect species from two genera, Irbisia spp. and Lapobs spp. They are small, black true bugs that are native to the western rangeland and can cause considerable damage...
Aphids in alfalfa Order: HemipteraFamily: Aphididae Description There are four aphid species considered to be economically important pests of alfalfa (Medicago sativa) grown in Colorado: the pea aphid (Acyrthosiphon pisum), cowpea aphid (Aphis craccivora), blue...
