Raabeina biangulara Zhang & Cao, 2011, sp. nov.

6. Raabeina biangulara sp. nov. (Figs. 5, 12, 19, 65–73) Description. Head slightly narrower than pronotum, crown with anterior margin weakly produced, coronal suture distinct (Fig. 5). Frontoclypeus narrow, anteclypeus broad (Fig. 19). General color yellow. Eyes black. Scutum and scutellum pale yellow, with patch at apex of scutellum black. Triangles yellow. (Figs. 5, 12) Abdominal apodemes reaching middle of fifth sternite (Fig. 65). Anal tube appendage with two obvious right-angle bends, touching or slightly extending beyond hind margin of pygofer side (Fig. 66). Pygofer side truncate, provided with four macrosetae at lower basal angle and row of nine setae at hind margin (Fig. 66). Subgenital plate hardly pigmented, with three macrosetae at transitional part; with two rows of marginal microsetae distally visible from side; without minute peg-like microsetae at the angle of caudal part; narrowed area prolonged (Figs. 67, 68, 69). Paramere apical part produced in quite bended shape (Fig. 70). Aedeagal shaft elongated, as long as preatrium, slightly curved (Fig. 72). Measurement. Male length 3.8–4.0mm (including wing). Material examined. Holotype: 3, CHINA, Sichuan Prov., Mt. Wawu, 9 July 2010, coll. Cao Yanghui; Paratypes: 53, same data as holotype. Deposition. Entomological Museum, Northwest A & F University, Yangling, China. Diagnosis. This new species can be distinguished from R. alae by the two obvious right-angle bends of the anal tube appendage, by the dark distal part and more obtuse lateral margin of the subgenital plate, and by the much longer aedeagal shaft. Etymology. The specific epithet is composed of Latin prefix “bi–” and Latin word “angulara”, referring to the two obvious right-angle bends of the anal tube appendage.Published as part of Zhang, Yalin & Cao, Yanghui, 2011, A taxonomic study of the Oriental leafhopper genus Raabeina Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Erythroneurini), with descriptions of five new species and one new record from China, pp. 47-58 in Zootaxa 2935 on pages 53-54, DOI: 10.5281/zenodo.20761