The largest species is probably either the Queen Alexandra's birdwing, Ornithoptera alexandrae, a butterfly, or the Atlas moth, Attacus atlas, a moth. Both of these species can exceed a length of 8 cm (3¼ in), a wingspan of 28 cm (11 in) and a weight of 12 g. Their larvae can weigh up to 58 g (2.0 oz) or 1.9 oz (54 g) . However, the White Witch, Thysania agrippina, has the longest recorded wingspan of the order, and indeed of any living insect, at up to at least 30 cm (12 in), though it is exceeded in surface area and mass by both Ornithoptera and Attacus.