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 > Cabbage aphid

Cabbage aphid

Brevicoryne brassicae

Whitney Cranshaw, CSU, Bugwood.org

Whitney Cranshaw, CSU, Bugwood.org

Size: Up to 1/12 inch long.

Description: Pear-shaped. They are green to gray in color with a white, waxy coating. They have long antennae and two cornicles ("tail pipes") on the rear of their abdomen (Identification of aphid species can be challenging; different species can be similarly colored).

Where/When: Feeds on broccoli, cabbage, Brussels sprout, cauliflower, canola, and other plants in the mustard family (Brassicaceae). Aphids are active from June through October.

Significance: Low to moderate numbers cause little or no injury. Larger numbers can slow growth and distort heads and leaves.

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