Picnic-pests
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Glischrochilus
picnic beetles, beer bugs
Glischrochilus is a genus of small beetles in the family Nitidulidae, commonly known as picnic beetles or beer bugs. The genus contains two subgenera with divergent feeding strategies: Librodor species feed on sap and fermenting plant matter, while Glischrochilus species are predators of soft invertebrates. Most species are characterized by black bodies with contrasting yellow, red, or orange elytral markings. The genus is distributed across North America and Eurasia and includes several agricultural pests.