Lygropia rivulalis, the bog lygropia moth, is a moth of the family Crambidae.

It is found in North America, where it has been recorded from Arizona, California, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, North Carolina, North Dakota, Ohio, Oklahoma, Ontario, Pennsylvania, Quebec, South Carolina, Tennessee, West Virginia and Wisconsin.

[1] The habitat consists of boggy or wet areas.

Adults are on wing from April to October.

This Lygropia-related article is a stub.