Grasshoppers

    Grasshoppers

    Acrididae

    two-striped grasshopper

    Two-striped grasshopper (Whitney Cranshaw, Colorado State University, Bugwood.org)

    grasshopper

    Differential grasshopper (David Cappaert, Bugwood.org)

    grasshopper feeding damage

    Grasshopper feeding damage to plants (Kansas Department of Agriculture, Bugwood.org)

    Pest Description

    • adults: ~ 1/8 – 1 1/2 inches; brown to green
    • nymphs: look like adults without fully developed wings
    • well-developed rear legs for jumping
    • there are many species of grasshoppers in Utah

    Host Plants, Diet & Damage

    • feed on many different ornamental plants, grasses, vegetables, forage and crops
    • cause chewing damage on leaves: skeletonizing, small to large holes and marginal feeding
    • chew primarily on leaves, stems and seedpods

    Biology, Life Cycle & Damaging Life Stage

    • overwinter as eggs (in egg pods) in the soil
    • eggs hatch in spring or early summer
    • development takes about 1 1/2 – 2 months
    • one (most) or more generations per year
    • nymphs and adults are the damaging stages

    IPM Recommendations

    • Damage from small populations can be tolerated.
    • Exclude grasshoppers from plants using fine mesh material (row covers).
    • Pesticide-based management should occur on a larger scale (e.g., a neighborhood) rather than on an individual property.
    • Use insecticide baits containing Nosema locustae or wheat bran + carbaryl.
    • Apply an insecticide (carbamate; pyrethroid) to protect specific plants.

    For more information, see our Grasshoppers fact sheet or our Community-Wide Grasshopper Control fact sheet.