Family Pyralidae (Pyralid Moths)  are agricultural pests; some are leaf tiers or leaf rollers; the majority are borers in stems, seeds, buds, or flowers. Some are wood borers in the cambium layer, others feed on combs in bee hives or on dried plant materials [4]. Many economically important species: Indian meal moth, Clover hay-worm, Zimmerman pine moth, Sunflower head moth. The celery webworm is a pest on celery and alfala, among other vegetable and fodder crops [4].

There are five subfamilies and at least 6,150 species worldide. North America has approximately 565 species in five subfamilies.