Explanation of Names
Harpalus caliginosus (Fabricius 1775)
18-26 mm, larger than most members of the genus
Literature says head distinctly punctate, otherwise externally little different from Harpalus katiae which has head impunctate. In females the last tergite (pygidium) demonstrates an angulated apex with abrupt upturn of the margin at the tip unlike the evenly rounded apex without sudden upturn seen in Harpalus katiae.
transcontinental, Canada to Mexico; in our area, NS-SK-WA to FL-CA(1)
Fields, cultivated land; often on Ragweed (Ambrosia)
Adults are predatory on other insects, esp. larvae. Also eats seeds, sometimes fruit (strawberries)
Life cycle assumed to be one year. Eggs laid in soil.
often found at lights indoors and outdoors(3)