Synoeca ilheensis is a species of wasp in the genus Synoeca. It is found within the Atlantic Forestlowlands in South America. Members of this species are more aggressive and will warn invaders by producing a rhythm with their wings that resembles soldiers marching. Synoeca ilheensis was publicly announced on August 3, 2017.[1]
Rodolpho S.T. Menezes noted that he found specimens of Synoeca septentrionalis in the Atlantic Forest.[2] He also stated they could be a separate species. In 2017, Mendes and Rogério Botion Lopes studied the specimens and determined them to be a separate species. The main defining traits are the coloration, jaw, and abdomen.