“To undergo its transformation … [Anthela excellens] forms a large silken cocoon, in some secure and well sheltered spot – this cocoon may be considered as being double, for the inner enclosure which was dark and thick, had apparently little connection with the outer casing, of a thin and transparent substance.” Description from an unpublished manuscript for AW Scott, ’Australian Lepidoptera and their Transformations’ (1864-1898).