There are several types of Cucumber Beetles. They are all small, about ¼-inch long, flying beetles that resemble ladybugs in size and shape but have a slightly more elongated frame with shiny yellowish green shell with either black spots or stripes.

Damage From Cucumber Beetles

Cucumber beetles can cause serious damage to cucumbers, melons, squash and other vegetables. They feed on young leaves, stems, fruit and flowers, leaving holes and scarring, and often transmit serious diseases, such as bacterial wilt and select viral diseases, as they feed. Spotted types also feed on garden plants such as roses and dahlias. Feeding usually begins in spring as the soil warms, but there can be multiple generations through summer. Adult females lay eggs in the soil. The tiny larvae feed on roots which sometimes causes wilting. Adults overwinter on garden debris and are difficult to control at this stage.

Where Cucumber Beetles Are Found Geographically

One or another is found throughout the United States. In coldest areas, they usually migrate in from warmer climates.

Related or Similar Pests

Striped Cucumber Beetle. Spotted Cucumber Beetle.


Cultural Controls

  • Use floating row covers to protect plants from egg-laying moths. To allow pollinators access, remove covers when plants are blooming.
  • Good sanitation – clean up plant debris after harvest or infestation.
  • Where available, plant resistant varieties.