Palestriped flea beetle
Whitney Cranshaw, CSU, Bugwood.org
Size: 1/8 inch long
Description: Oval-shaped, dark brown with two yellow to white stripes running down the wing covers.
Where/When: Feeds on plants in the squash family, as well as bean, corn, sunflower, lettuce, potato, and many weeds. Active from May through June and August through September.
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.