Chilo polychrysus, the dark-headed striped borer, is a moth in the family Crambidae. It was described by Edward Meyrick in 1932.[1] It is found in India, Malaysia, Thailand, Laos, Vietnam and Indonesia.
The wingspan is 16–25 mm. The wings are yellow brown with small dark spots.[2] The larvae feed on Cyperaceae and Poaceae species, as well as Oryza sativa, Saccharum officinarum, Triticum species and Zea mays. They bore the stems of their host plant.[3]