About Alypia ridingsii Grote, 1865
Alypia ridingsii, commonly known as the mountain forester or Ridings' forester, is a moth species belonging to the family Noctuidae. This species was first described by Augustus Radcliffe Grote, with its published scientific name dated to 1865. It is distributed in North America, ranging eastward to the eastern edge of the Rocky Mountains in Colorado. It can also be found in Arizona, Utah, across the whole of California, and extends north into Oregon, Idaho, Washington, British Columbia, and Alaska. The wingspan of Alypia ridingsii is approximately 30 mm. Adult moths are active between March and May in California, and may be active as late as June in the more northern and eastern areas of the species' range. The larvae of this moth feed on Camissonia bistorta, Camissonia californica, Camissonia dentata, and Clarkia rhomboidea.
