Hawaii hotspot created at least 129 volcanoes, more than 123 of which are extinct volcanoes, seamounts, and atolls, four of which are active volcanoes, and two of which are dormant volcanoes. They can be organized into three general categories: the Hawaiian archipelago, which comprises most of the U.S. state of Hawaii and is the location of all modern volcanic activity; the Northwestern Hawaiian Islands, which consist of coral atolls, extinct islands, and atoll islands; and the Emperor Seamounts, all of which have since eroded and subsided to the sea and become seamounts and guyots (flat-topped seamounts). Hawaiian volcanoes are characterized by frequent
Queanbeyan Nature Reserve likely to have become extinct since they were first recorded. Remnant populations are now usually restricted to roadsides, travelling stock reserves, cemeteries railway easements and the occasional private landholding. Within NSW, natural populations of Button wrinklewort are formally conserved within Queanbeyan Nature Reserve, Crace Grassland Reserve (part of the Canberra Nature Park) and the Red Hill Section of Canberra Nature Park. As a consequence, Button wrinklewort is listed as endangered under the "Threatened Species Conservation Act 1995" (NSW) and as endangered under the "Environment Protection and Biodiversity Conservation Act 1999" (Cth). The Golden Sun Moth "Synemon plana" is a medium-sized,