[1]
D. W. Hall and J. F. Butler, “Common name: mourning cloak (known in the United Kingdom as the Camberwell beauty) Nymphalis antiopa (Linnaeus) (Insecta: Lepidoptera: Nymphalidae: Nymphalinae): EENY 451/IN821, 6/2009”, EDIS, vol. 2009, no. 6, Jul. 2009.