Camera zooms into emerging wings on Chinese mantis Tenodera sinensis. Fully_grown wings only appear on mantises after their last moult and are only used by males to search for mates. The Chinese mantis is the largest mantis in the U.S. with adult females reaching 100 mm in length. They were introduced in the U.S. in 1895 to control insect pests. They are found throughout the Northeast and elsewhere in the world.