Anisodactylus harrisii

Ground beetles in the genus Anisodactylus are generally associated with open, disturbed habitats including agricultural fields, lawns, and gardens. They are ground-dwelling, foraging at the soil surface.

Canada; United States. North America.

The genus Anisodactylus includes granivorous species that feed on weed seeds. Anisodactylus harrisii has been observed as part of this granivorous feeding guild, consuming seeds of agricultural and garden weeds.

As with other ground beetles, adults are fast-moving and active at the soil surface. They may be encountered beneath stones, mulch, or logs, or running across open ground.

Ground beetles in the genus Anisodactylus contribute to weed seed predation, potentially reducing populations of agricultural and lawn weeds. They are part of the granivorous ground beetle guild that provides ecosystem services in managed landscapes.

Anisodactylus harrisii and related species may provide biological control of weed seeds in agricultural and garden settings. They are not known to be household pests.

• Anisodactylus sanctaecrucisAnother common granivorous ground beetle in North America with similar habitat preferences and feeding ecology; distinguished by specific morphological characters not detailed in available sources.
• Harpalus pensylvanicusA granivorous ground beetle with similar weed seed predation behavior and North American distribution; belongs to a different genus within Carabidae.

• ground beetle
• granivore
• weed seed predator
• North America
• Carabidae
• agricultural beneficial insect

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• An unusual but not unpleasant home invasion by a beneficial beetle: Big-headed ground beetle, Scarites subterraneus — Bug of the Week