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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

Spinach flea beetle
Photo Credit: Whitney Cranshaw, CSU,

Spinach flea beetle
Disonycha xanthomelas
Size: 1/5 inch long

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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