Message:The species was named by Walter Rothschild in 1907, in honour of Alexandra of Denmark. The first European to discover the species was Albert Stewart Meek in 1906, a collector employed by Walter Rothschild to collect natural history specimens from Papua New Guinea. Although the first specimen was taken with Meek soon discovered the early stages and bred out most of the first specimens. Though most authorities now classify this species in the genus Ornithoptera, it has formerly been placed in the genus Troides or the now defunct genus Aethoptera. In 2001 the lepidopterist Gilles Deslisle proposed placing it in its own subgenus he originally proposed the name Zeunera, but this is a junior homonym 1936 and his replacement is Straatmana.