University of Minnesota Extension
www.extension.umn.edu
612-624-1222
Menu Menu

Extension > Garden > Diagnose a problem > What insect is this? > Garden Pests > Beetles, bugs, ants, and other insects without obvious wings - 1/4 inch - 1/2 inch long > Japanese beetle

Japanese beetle
Photo Credit: Jeff Hahn, Univ. of MN Japanese beetle
Photo Credit: Jeff Hahn, Univ. of MN

Japanese beetle
Popillia japonica
Size: 1/3 – 7/16 inch long

Where/When: Feeds on hundreds of herbaceous and deciduous plant species, including roses and grapes. Adults are present from late June to early September.

Significance: Feeds on leaves, flowers, and fruits causing cosmetic damage and can be injurious to plants when abundant.
Give us your feedback
  • © 2014 Regents of the University of Minnesota. All rights reserved.
  • The University of Minnesota is an equal opportunity educator and employer. Privacy