Japanese Beetle

  • Actual Size: 8 to 11 mm

    Characteristics: Metallic green in color; coppery-colored wing covers.

    Legs: 6

    Antennae: Yes

    Wings: Yes, but are clumsy flyers.

    Habitat: Japanese beetle grubs are pests of turfgrass, chewing grass roots, causing the turf to brown and die. Commonly found in gardens on roses, beans, grapes, and raspberries, feeding under direct sun.


    • Widespread and destructive pest of lawns, landscape, and ornamental plants.
    • Estimated damage and control costs are over $460 million each year in the U.S.
    • Adult beetles can fly, allowing them to easily move throughout a homeowner’s landscape.

Japanese Beetles in South Carolina

The Japanese beetle is a widespread and destructive pest of lawns, landscapes, and ornamental plants in the United States. Japanese beetles are a serious pest of turf, trees, shrubs, flowers, and crops. Although adults will feed on over 300 species of plants, grubs feed mainly on the roots of grasses. Difficult and expensive to control, these beetles feed on grassroots, damaging turf, golf courses, and pastures. Japanese beetles were first found in the U.S. in 1916 in New Jersey and have since spread throughout most states east of the Mississippi River.

Japanese Beetle Habitat

Japanese beetles have a wide host of plants they can feed on and can live anywhere there is sufficient foliage. They are not limited to forests or grasslands and often live on farms, cities, and even your garden. These beetles are especially common on roses, beans, grapes, and raspberries.  Japanese beetles have a voracious appetite and are most active on warm sunny days, feeding in groups under direct sun. Adult beetles can fly, allowing them to easily move throughout a homeowner’s landscape. These pests begin eating at the top of plants and work their way down. 

Japanese Beetle Behaviors, Threats, or Dangers

While Japanese beetles do have powerful chewing mouthparts for munching on leaves, they do not bite people. However, the estimated damage and cost of controlling Japanese beetles in the U.S. is over $460 million each year! Due to their distinctive feeding pattern, damage caused by Japanese beetles can be easy to recognize. These pests feed on the soft tissue between leaf veins, leaving behind a skeletonized, lace-like pattern. The grubs damage grass as they overwinter and feed in soil, which can result in brown patches of dead or dying grass that will pull up easily due to their weakened roots. If you suspect a Japanese beetle infestation, contact your local pest control professional.

Need help with Japanese Beetle control?

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