Loxostege lepidalis is a moth in the Crambidae family. It was described by Hulst in 1886. It is found in North America, where it has been recorded from Alberta and eastern Washington to California and New Mexico. The habitat consists of prairies and badlands. The wingspan is about 26 mm. The ground colour of the fore- and hindwings is whitish with grey areas and checkered terminal lines. There is a yellowish-buff area along the costa and termen. Adults are on wing from June to August.