Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Pale Yellow Dune Moth (Copablepharon grandis) is a moth of the Noctuidae family. It is found from southern Alberta east to south-western Manitoba, the eastern parts of South Dakota, North Dakota and Iowa, west to California and south to southern Arizona, New Mexico and western Texas.The wingspan is 38-41 mm. Adults are on wing from July to August depending on the location. There is one generation per year.