Ctenuchid Moth’s can be found in meadow or yard areas, they feed on different grasses and use the various grasses or irises as host plants. The caterpillars have multiple tufts of white and yellow, they become adults between May and August. The Ctenuchid Moth of the American southwest has yellow veins on the brown forewings. There are other variations in other parts of North America. Here in northern Arizona, I saw hundreds of these emerge in the past week.