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Summer Squash and Zucchini > Blossom > Holes in blossom

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  • Image: Striped Cucumber Beetle 1
    Credit: E.C. Burkness, University of Minnesota
  • Image: Striped Cucumber Beetle 2

    Credit: E.C. Burkness, University of Minnesota

  • Image: Striped Cucumber Beetle 3

    Credit: E.C. Burkness, University of Minnesota

  • - CLICK PHOTOS TO ENLARGE -

green arrowStriped Cucumber Beetle
Acalymma vittatum

  • Feeds on flowers and directly on fruit, causing scarring
  • Beetles feed on leaves and can completely defoliate a plant
  • Shows a preference to cucumbers, certain varieties of winter squash, and zucchini
  • Vectors bacterial wilt
  • Adult is yellow-green in color, about 1/4 inch long, and marked by three black stripes
  • Active from June through September
  • More information on Striped Cucumber Beetle...
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  • Image: Spotted Cucumber Beetle 1
    Credit: Whitney Cranshaw, Colorado State University, Bugwood.org
  • Image: Spotted Cucumber Beetle 2

    Credit: Susan Ellis, Bugwood.org

  • - CLICK PHOTOS TO ENLARGE -

green arrowSpotted Cucumber Beetle
Diabrotica undecimpunctata howardii

  • Beetles feed on leaves, flowers, and fruit
  • Vectors bacterial wilt
  • Adult is 1/4 inch long, bright yellow-green body with 12 black spots
  • Active from June through September

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