About Pero morrisonaria (H.Edwards, 1881)
Pero morrisonaria, commonly known as Morrison's pero, is a moth species belonging to the family Geometridae. This species was first formally described by Henry Edwards in 1881. Its distribution ranges from Newfoundland to British Columbia in Canada, and extends coast to coast across the northern United States. In the eastern portion of its range, it occurs south as far as South Carolina, while in the western portion it extends south to California. The wingspan of this moth measures between 34 and 40 mm. Adults fly from May to July, with flight timing varying by location.
