Taxonomic study of the planthopper genus Lacusa Stal, 1862 (Hemiptera, Fulgoromorpha, Lophopidae) Author Xing, Jichun Author Chen, Xiangsheng text ZooKeys 2014 405 139 148 http://dx.doi.org/10.3897/zookeys.405.6981 journal article http://dx.doi.org/10.3897/zookeys.405.6981 1313-2970-405-139 386463701FED4DB6826182774C65FCD3 386463701FED4DB6826182774C65FCD3 Lacusa digitata Xing & Chen sp. n. Figs 11-22 Description. Body length (from apex of vertex to tip of forewings): male 8.5-8.7 mm (n=2). Color pattern of anterior dorsum and face as in Figs 11-15. Pronotum and mesonotum yellowish brown. Tegula yellowish. Ocelli red. Apical margin of forewings maculately piceous. External features as in generic description. Male genitalia. Pygofer short, upper 1/3 very narrow in lateral view, dorsal margin strongly concave (Fig. 19). Anal tube in dorsal view with ratio length to maximum width 3.0 (Fig. 20). Genital styles long, apex approximately round in lateral view, dorsolateral with a finger-like process near posterior margin (Fig. 19). Aedeagus with 2 dorsally directed, spinose processes, dorsally directed at medioventral margin, and exceed the end of aedeagal shaft; near base of aedeagus on dorsal side of aedeagus with 2 short spinose processes; base of aedeagus on dorsal side with 1 short spinose process (Figs 21, 22). Figures 11-22. Lacusa digitata sp. n. 11 Male habitus, dorsal view 12 Male habitus, lateral view 13 Male, head and thorax, dorsal view 14 Male, frons and clypeus 15 Male, head and thorax, lateral view 16 Left fore femur and tibia, dorsal view 17 Left hind tibiae and lateral spines, and tarsomere, dorsal view 18 Apex of left hind tibiae and tarsomere, dorsal view 19 Male genitalia, lateral view 20 Anal tube, dorsal view 21 Aedeagus, lateral view 22 Aedeagus, caudal view. Scale bars: 19-22 = 0.20 mm. Type material. Holotype: ♂, China: Yunnan Province, Ruili City, Mengla County, Moli, 5 June 2011, coll. Jiankun Long (GUGC); paratypes: 1♂, Yunnan Province, Lianghe County, Mengyang, 27 July 2013, coll. Zhihua Fan (GUGC). Diagnosis. This species is similar to Lacusa fuscofasciata ( Stal , 1854) but can be distinguished by the base of aedeagus on dorsal side with one spinose process, near base of aedeagus on dorsal side with two short spinose processes, the anal tube relatively short, and the genital styles much more long. Etymology. The species name is derived from the Latin word "digitata" , indicating that the genital style dorsolateral with a finger-like process near posterior margin.