"Noctuidae", Owlet moths, are a family of robustly built moths that includes more than 35,000 known species out of possibly 100,000 total, in more than 4,200 genera. They constitute the largest family in the Lepidoptera. Several species have larvae (caterpillars) that live in the soil and are agricultural or horticultural pests. These are the "cutworms" that eat the bases of young brassicas and lettuces. They form hard, shiny pupae. Most noctuid larvae feed at night, resting in the soil or in a crevice in its food plant during the day.