Aphis brassicae Brevicoryne brassicae, commonly known as the cabbage aphid or cabbage aphis, is a destructive aphid (plant louse) native to Europe that is now found in many other areas of the world.

[2] Cabbage aphids, from the genus Brevicoryne of the family Aphididae, are grayish-green, but a waxy covering gives them a grayish-white[2] to powdery blue[3] appearance.

(Glucosinolates are natural defenses for plants in the order Brassicales against pests and herbivores.)

[4] The defense mechanism has a dramatic negative effect on the survival of the larval ladybird predator Adalia bipunctata.

[5] The chemical defence of the aphids has been likened to a "walking mustard oil bomb".