Cabbage looper on cabbage - The first instar is white and almost clear with a black head capsule. Later instars are green with a thin white line on each side. Mature larvae reach 3 to 4 cm in length.

Young cabbage looper feeding on a kale leaf. Mature caterpillar reaches 3 to 4 cm in length.

Pupa of the cabbage looper. During its last larval stage the caterpillar spins a cocoon.

Cabbage looper adult. The adult is ca 2.5 cm in length and mottled, greyish-brown. The wingspan is ca. 4 cm.

Moth of the cabbage looper. Real size: ca 2.5 cm in length, wingspan is ca. 4 cm

Damage by cabbage looper on cabbage