Spinach flea beetle
Whitney Cranshaw, CSU, Bugwood.org
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.