Restricted demon

''Notocrypta curvifascia'', the restricted demon, is a butterfly belonging to the family Hesperiidae. ''N. curvifascia'' is commonly found in many regions of temperate and tropical East Asia, Indonesia, and the Indian subcontinent.

Among butterflies, it is relatively small, at approximately 4 cm long . Its wings are dark brown to black, with a white eyespot near the trailing end.