Lewin's Bag Shelter Moth (Panacela lewinae) is a moth of the Eupterotidae family. It is found from southern Queensland to southern New South Wales. The wingspan is about 30 mm. The caterpillars live communally in a shelter on their food plant, made of leaves joined by silk. They spend the day in this shelter and come out to feed at night. They feed on Eucalyptus, Lophostemon, Angophora and Syncarpia (including Syncarpia glomulifera) species, as well as Chamaecytisus prolifer, Pinus radiata and Exocarpus cupressiformis. The hairs of the caterpillars can cause skin irritation (Urticaria).