“…Some species of Ctenuchina are very similar to C. melanitis, such as Epidesma ursula (Stoll, [1781]) and E. crameri (Travassos, 1938), as well as of the subfamily Dioptinae (Notodontidae), such as Getta unicolor (Hering, 1925), Polyptychia hermieri Miller, 2009 andPhavaraea rejecta (Geyer, 1832) (Miller 2009), that could be compromised by mimetic rings. The androconial organs in males of Lepidoptera are found in different parts of the body (Swinton 1908(Swinton -1909Varley 1962;Birch et al 1990;Grados 2004), which is also observed in the Ctenuchinae. According to the morphology of androconial organ in C. melanitis, we propose that the glands located on the third tergith store semiochemicals (Kellog 1894;Scoble 1992).…”