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 (adult). Its wings are dark brown to black, with a white eyespot near the trailing end.

Ītzpāpalōtl ("Obsidian Butterfly") was a goddess in Aztec religion.
She was a striking skeletal warrior and death goddess and the queen of the Tzitzimimeh. She ruled over the paradise world of Tamōhuānchān, the paradise of victims of infant mortality and the place identified as where humans were created.