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

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Spotted cucumber beetle

Diabrotica undecimpunctata howardi

Spotted cucumber beetle

University of Minnesota

Size: 1/5 inch long

Description: Yellow with 12 black spots on its wings.

Where/When: Feeds primarily on cucumbers, squash melons, and pumpkins. Active from late June through August.

Significance: Large populations are rarely present. Is a vector of bacterial wilt.

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