Egg The egg stage starts with the female common duffer depositing eggs on host plants. The eggs are small, often spherical, and can range in color, but are mostly inconspicuous to avoid predation. The embryonic common duffer develops within, relying on the egg's nutrients.
Larva In this stage, the larva, commonly known as a caterpillar for common duffer, has a tube-like body with multiple segments. Initially, caterpillars are very small, but they grow rapidly, molting several times, as they are voracious feeders on plant material, and exhibit distinct color patterns for camouflage or warning.
Pupal The pupal stage is a non-feeding period where the common duffer undergoes transformation. The pupa, often attached to a substrate or concealed, has a protective casing. Within, the common duffer's body is reorganized, developing wings and adult structures. The color and shape can vary, often camouflaged.
Adult Emerging from the pupa, the adult common duffer's development is marked by the presence of wings and functional reproductive organs. The body is fully formed and hardened, with distinctive coloration for species recognition and mating. The adult is mobile, focusing on feeding and reproduction.