He also cited characteristics of wing venation that distinctly differs from that of lepidopterans. Other foods include crayfish, sow bugs, grasshoppers, trichopterans, lepidopterans, and dipterans. Eyespots are a type of automimicry used by some lepidopterans. Lupins are important larval food plants for many lepidopterans (butterflies and moths). There are almost 200 endemic species of lepidopterans in Italy. Only a few birds, such as the nightjars, hunt nocturnal lepidopterans. It is considered one of the most impressive and appealing-looking lepidopterans. The Crambidae are the grass moth family of lepidopterans. "Helianthus" species are used as food plants by the larvae of many lepidopterans. "Bacillus thuringiensis" is a bacterial disease that affects Lepidopterans and some other insects. The fertilized females of these wasps lay an egg in the pupae of those lepidopterans. Silk was made using various breeds of lepidopterans, both wild and domestic. Sidewinder juveniles appear to mimic both life stages of lepidopterans in their luring motions. Only 42 species of parasitoid lepidopterans are known (1 Pyralidae; 40 Epipyropidae). Most lepidopterans that migrate are butterflies, and the distance travelled varies.