Macrocilix maia is a moth in the Drepanidae family. It is found in India, Japan, Taiwan, Korea, China, Peninsular Malaysia, Sumatra and Borneo. The wingspan is 37–45 mm. Adults have been recorded in May. The larvae feed on the leaves of Quercus variabilis. They have a creamy body, marked with dark brown in a longitudinally reticulate manner. Some segments have a rufous suffusion. The moth features two symmetrical patterns strikingly resembling flies that seem to feed on bird dropping. The moth even smells of bird droppings.