University of Maryland Extension

Alfalfa Weevil A Pest of Early Season Alfalfa

Alfalfa (Medicago sativa L.) is an important forage crop for dairy and beef cattle, swine, poultry, sheep, and horses. In Maryland, alfalfa weevil, Hypera postica (Gyllenhal) (Coleoptera: Curculionidae), occasionally cause significant damage on susceptible cultivars.
Alfalfa weevil was first detected in Utah in 1904, and has since spread throughout the contiguous United States. It was first detected in Maryland in 1951. Efforts to suppress alfalfa weevil populations in Maryland have been largely successful because of biological control, but continued monitoring and management programs are vital to avoid localized pest outbreaks.

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