Lithosia is a genus of moths in the family Erebidae. The genus was first described by Johan Christian Fabricius in 1798. Species are cosmopolitan. Palpi short and porrect (extending forward). Antennae ciliated. Forewing with shorter and broader cell. Vein 2 from beyond the middle. Vein 3 and 4 stalked, vein 5 absent, vein 6 from below angle or from angle or beyond it. Vein 9 rising from vein 10 and forming an areole or stalked with veins 7 and 8. Vein 11 free or anastomosing (fused) with vein 12. Hindwing with vein 3, 4 and 6, 7 stalked. Vein 5 absent and vein 8 from middle of cell.