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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 > False Japanese beetle

False Japanese beetle

Strigoderma arboricola

False Japanese beetle

Jeff Hahn, University of Minnesota

False Japanese beetle

Jeff Hahn, University of Minnesota


Size: 3/8 - 7/16 inch long

Where/When: Found in areas with sandy soils on a wide variety of plants including roses, blackberry, clover, coreopsis, hollyhock, honeysuckle, iris, lilies, and peonies. Attracted to white or light-colored flowers. Adults are active starting late June or early July, feed for several weeks, and are typically gone by late July.

Significance: Feeds on blossoms, foliage, and fruit, causing cosmetic injury and potentially damage to the health of plants if they are abundant.

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