Sitochroa chortalis, the dimorphic sitochroa moth, is a moth in the family Crambidae.

[1] It is found in North America, where it has been recorded from Nova Scotia to southern British Columbia, south to New Jersey, Arizona and northern California.

[2] The habitat consists of grassland and prairie areas.

Adults are on wing from mid-May to mid-July.

[3] The larvae feed on Amaranthus retroflexus.