First discovered in in Whangārei in 1996, it has spread south through Auckland. The yellow and black caterpillars have stinging hairs.
Eggs laid in neat groups on bamboo leaves.
Yellow. Row of raised black spots in each segment. Groups of long hairs stick up from black spots. Hairs can cause skin irritation. Larvae toxic to predators. Feed on leaves. Severe defoliation when large numbers present.
Pupates in flattish oval brown cocoon on leaf or other surface. Cocoon has parchment-like texture.
Toxic to predators (contains cyanide derivatives). Occurs in two broods - October, and March to May. Rarely observed. Flies in sunshine.
8 - 12.5mm
Northern North Island.
Parks and gardens, shelter belts.