Two other lepidopterists use a phylogenetic analysis with different nomenclature. There is not always consensus among lepidopterists over the listing of suitable plants. Stock was obtained from amateur lepidopterists who periodically provided few dozen butterflies to the exhibit. It is well-known to lepidopterists as the main foodplant of the Old World swallowtail. Lepidopterists are served by a number of national and international scientific societies. Recently lepidopterists have abandoned clades like suborders, and those between orders and superfamilies. Lepidopterists have suggested that conservation of "P. rebeli" requires focus on conservation of "G. cruciata".