About Alypia mariposa Grote & Robinson, 1868
Alypia mariposa, commonly known as the mariposa forester, is a moth species belonging to the family Noctuidae. This species was first formally described by Augustus Radcliffe Grote and Coleman Townsend Robinson in 1868. It is distributed in the Coast Ranges and Sierra foothills of California, ranging from Kern and San Luis Obispo counties in the south to Placer County in the north. Alypia mariposa resembles Alypia ridingsii, but differs by lacking black lines through its white wing spots. Adult individuals of this species fly during the months of April, May, and June. Recorded host plants for the larvae of Alypia mariposa are Clarkia bottae and Clarkia unguiculata.