Koa wilt there are no local hosts, it is suggested that one plant seeds from several different sources in the hope of finding a resistant tree. Currently, research about Koa wilt is focused primarily on determining resistant Koa varieties. Koa is a commodity, a dominant native forest species, and an important element of Hawaiian culture. Koa is highly prized hardwood that can sell for prices as high as $150 a board foot, a special measurement indicating one-foot by one-foot by one-inch wood piece. Koa is currently being grown on plantations to support this high demand, yet some plantations have a 90% tree
Scotorythra paludicola State Park. Laboratory feeding trials of these larvae showed that they could complete their development at the same rate on both the normal host ("Acacia koa") and the invasive tree ("Falcataria moluccana"). Three other exotic tree species, "Acacia confusa", "Prosopis pallida", and "Leucaena leucocephala" were not suitable host plants and all the larvae tested on these species died after 5 days of feeding. Scotorythra paludicola Scotorythra paludicola, the koa looper moth, is a moth of the family Geometridae. It was first described by Arthur Gardiner Butler in 1879. It is endemic to the Hawaiian islands of Kauai, Oahu, Maui and