Patania ruralis, the mother of pearl moth, is a species of moth in the family Crambidae.

The forewings are pale whitish-ochreous, yellowish-tinged; a grey subcostal suffusion and connected orbicular dot; lines rather dark grey, first straight, second serrate, curved, strongly broken inwards beneath middle; a dark grey discal mark, nearly followed by a grey blotch; a grey terminal band, edge parallel to second line.

The larva is whitish green, sides greener; dorsal line darker; head green.

[1] The moth flies from June to September depending on the location.

The larvae feed on stinging nettle and are notable for their rolling locomotion.