This insect pest is increasing in importance on hybrids and high yielding cultivars of sorghum in India. The adult has dark-gray forewings. Hind wings, fringed with hairs on the anterior margin, are larger than the forewings. Creamy-white, round or conical eggs are laid on spikelets and kernels. The newly-hatched larva is dirty white, with a brown head. The fully-grown, dark brown larva is very active.
Larvae destroy kernels. They produce webs of silken thread that remain on the panicle. Heavily infested panicles may be covered with webbing.