Lacusa producta Xing & Chen 2014

Body length (from apex of vertex to tip of forewings): male 9.2–9.3 mm (n=3). Color pattern of anterior dorsum and face as in Figs 23–27. General appearance as in Lacusa digitata sp. n., but the body much larger. Male genitalia. Pygofer short, upper 1/3 very narrow in lateral view, dorsal margin strongly concave, posterior margin angle producted near the middle; (Fig. 28). Anal tube in dorsal view with ratio length to maximum width 4.1 (Fig. 29). Genital styles long, apex approximately round in lateral view, dorsolateral with a small hook process near posterior margin (Fig. 28). Aedeagus with 2 dorsally directed, spinose processes, dorsally directed at medioventral margin, and exceed the end of aedeagal shaft; mediolateral of aedeagus with 2 long spinose processes; base of aedeagus on dorsal side with 1 spinose process (Figs 30, 31).