Identification: Wingspan 70 mm. Black with scattered white marks on forewing; line of white blotches on hindwing. Male has a narrow, pale sex marking near base of forewing.
Habitat and Range: Open forest and woodland. Widespread across northern and eastern Australia. Also Cocos (Keeling) and Christmas Is, some Indonesian islands, and Lord Howe and Norfolk Is.
Notes: Adults go into quiescent aggregations in protected, shady sites during winter. The boldy striped caterpillars have four pairs of tentales, and in Brisbane gardens feed mostly on oleanders and figs. Pupa is a brillant metallic silver suspended upside down beneath a leaf.