Genus Besaia * Walker, 1865

* Kobayashi & Nonaka (2016) treated Besaia as a good genus both according to phyletic and phenetic separation and because it is well distinct from genus Biula by male the genitlia and facies, unlike Schintlmeister (2013) describing it as a subgenus under Biula . Hence, Besaia is treated as a valid genus here.