Pyrausta socialis is a moth in the Crambidae family. It was described by Grote in 1877. It is found in North America, where it has been recorded from Ontario west to British Columbia, south to Montana and Colorado. The wingspan is 22–25 mm. The forewings are deep reddish or pinkish brown with a dark subterminal band. The hindwings are whitish buff with a fuscous postmedial line.