Hypena obsoleta is a moth of the Noctuidae family. It is endemic to Kauai, Oahu, Molokai, Maui, Lanai and Hawaii. It is one of the most variable of all Hawaiian insects. The color forms are most confusing, and it often appears that several species are represented in assembled series. The markings on some examples are extremely bold, but they are obsolete on other specimens, and all kinds of intergrades occur. The larvae feed on Paspalum conjugatum and other grasses in the mountains