Lacusa digitata Xing & Chen

Xing, Jichun & Chen, Xiangsheng, 2014, Taxonomic study of the planthopper genus Lacusa Stal, 1862 (Hemiptera, Fulgoromorpha, Lophopidae), ZooKeys 405, pp. 139-148 : 143

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).

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 ( Stål, 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.