“…Some studies have confirmed the potential of male morphology to distinguish species, and it is considered very important to the systematics of Chydoridae (Sinev, 1999b;2013;2015;Sinev and Sanoamuang, 2011;Sinev and Shiel, 2012;Kotov and Fuentes-Reines, 2015;Sousa et al 2016b;2016c). Males of F. asymmetrica sp.…”