Macrotrichia, Zhang, Yalin, Sun, Jing & Dai, Wu, 2009

Zhang, Yalin, Sun, Jing & Dai, Wu, 2009, Macrotrichia, a new genus of Ledrinae (Hemiptera: Cicadellidae) from China, Zootaxa 2194, pp. 54-60 : 54-55

Macrotrichia gen. n.

Type species: Macrotrichia deltata sp. n.

Etymology. The name of the new genus refers to many long fine setae on inner margin of the style.

Description. Body large, generally virescent in living and freshly pinned specimens (Fig. 1), ochraceous in faded specimens (Fig. 2). Head and pronotum dark brown along lateral margin (Figs. 1, 2). Scutellum with basal angles testaceous (Figs. 1, 2). Pronotum and scutellum thickly punctated; vertex and tegmina sparsely punctated.

Head distinctly narrower than pronotum, slightly wider than anterior margin of scutellum. Vertex flat, shorter than half width between eyes; anteriorior margin obtusely angulate; coronal suture distinct, complete from anterior to posterior margin (Figs. 1, 2). Ocelli proximate to posterior margin of vertex, nearer to each other than to corresponding eye (Figs. 1, 2). Face slightly shorter than wide, broadly and distinctly concave between eyes in lateral view (Figs. 3, 4). Clypeal suture distinct; frontoclypeus reduced apically; anteclypeus broadened medially, then tapered apically; genae flat, with mesal margin deeply depressed; lora broad (Figs. 3, 4). Antennae short; antennal ledges distinct, extending nearly to margin of crown (Figs. 3, 4). Pronotum hexangular; anterior margin straight, lateral margins broadly angularly produced, posterior margin moderately concave; disc with long transverse sculpturing (Figs. 1, 2). Scutellum triangular, longer than pronotum; scutoscutellar depression curved cephalad (Figs. 1, 2). Tegmina extending beyond apex of abdomen, with veins reticulate apically, clavus densely punctate (Figs. 5, 6). Hind wings hyaline. Legs short. Fore femur with numerous irregularly arranged short setae. Hind femur with three stout macrosetae at apex. Hind tibiae flattened with five stout anterodorsal (AD) setae; posterodorsal (PD) setae fine; anteroventral (AV) and posteroventral (PV) setae shorter and finer.

Male 8th sternite twice longer than 7th sternite, posterior margin strongly concave medially (Figs. 13, 20).

Male pygofer tapering posteriorly and subtriangular in lateral view, with a well developed hook-like process apically (Figs. 11, 18). Subgenital plates broad, slight fused at base, tapered to rounded apex, with numerous short setae on ventral surface and row of slightly stouter setae near apical margin (Figs. 12, 19). Aedeagus well developed, with single process or a pair of processes at base anteriorly; aedeagal shaft simple and stout, curved dorsally and cephalad in lateral view (Figs. 16, 22). Style with apical half elongate and curved inwardly at apex, with a subapical process and many long fine setae on inner margin; outer basal arm strong and straight; inner basal arm very small or indistinct (Figs. 15, 21). Connective slightly elongated (Figs. 15, 21).

Female 7th sternite with posterior margin concave, V-shaped (Fig. 14); first valvulae sword-like, with submarginal striation sculpture dorsally; second valvulae blade-like, with several apical teeth dorsally (Figs. 7–10).

Distribution. China (Yunnan, Hainan and Xizang).

Remarks. The new genus is very similar to the genus Tituria externally, but it can be distinguished from the latter by: 1) body large, length longer than 19mm (Figs. 1, 2); 2) pygofer side without appendage at ventral margin (Figs. 11, 18); 3) aedeagus very short, with one or paired developed sclerited processes at base anteriorly (Figs. 16, 22), but aedeagal shaft without apical process or lamellae; 4) style with long fine setae on inner edge (Figs. 15, 21).