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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 > Spinach flea beetle

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Spinach flea beetle

Disonycha xanthomelas

Spinach flea beetle

Whitney Cranshaw, CSU, Bugwood.org


Size: 1/5 inch long

Description: Oval-shaped, black wing covers with orange thorax (area behind head).

Where/When: Feeds on spinach and beets. Active from May through June and August into October.

Significance: Causes feeding damage (small, round, irregular holes) primarily to foliage. Low to moderate numbers usually do not impact plant health. High numbers can result in wilted and stunted plants.

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