This last butterfly, together with an unidentified nymphalid (17,18), is thought to be an example of "mimicry", being similar in appearance to the chemically-protected genus Tellervo (not illustrated). Delias aruna, a lowland species, is one of the few "jezebels" included. As the great majority of New Guinea Delias are montane insects, and many have extraordinarily bright and curious patterns, this perhaps suggests that most of Ellis Rowan's butterfly paintings were made in Madang.