About Macaria oweni (Swett, 1907)
Macaria oweni, commonly known as Owen's larch looper or Owen's angle moth, is a moth species belonging to the family Geometridae. This species was first formally described by Louis W. Swett in 1907. It is distributed in North America, ranging from Newfoundland to west-central Alberta, and extends south through the eastern part of its range to northern New England. The wingspan of this moth measures approximately 23 mm. In Alberta, adult moths are active in flight from June through mid-July. There is thought to be one generation of the species each year. The larvae of Macaria oweni feed on Larix laricina.