Genus Bireta * Walker, 1856

* Schintlmeister (2013) included subgenera Bireta, Cutuza Kiriakoff, 1962, Mangea Kishida, 2004 and Torona Walker, 1856 in the genus Bireta . He also treated Dypna Kiriakoff, 1962 and Torigea Matsumura, 1934 as junior synonym of Cutuza and Torona, respectively. But each of these subgenera has distinct facies and male genital attributes from those of Bireta . Therefore, these subgenera have been revived to genera rank for stability of the classification (Kobayashi & Nonaka, 2016).