Neunkanodes formosana Yang, 1989

Hou, Xiao-Hui, Yang, Lin & Chen, Xiang-Sheng, 2014, Review of the Oriental genus Neunkanodes Yang (Hemiptera: Fulgoromorpha: Delphacidae) with descriptions of two new species, Zootaxa 3795 (2), pp. 174-180 : 177

Neunkanodes formosana Yang, 1989

( Figs 13–25 )

Neunkanodes formosana Yang, 1989: 164 , fig. 68A–K; Ding, 2006: 575, fig. 314A–L.

Measurement. Length of body 2.90 mm (male), 3.50 mm (female); including forewing 4.60 mm (male), 5.80 mm (female); tegmen length 4.10 mm (male), 5.20 mm (female).

Coloration. General color reddish brown to yellowish brown. Median line of frons, vertex, pro- and mesonotum, commissural suture whitish yellow. Areas between carinae of frons somewhat dark brown. Abdomen somewhat whitish yellow to reddish yellow. Pygofer yellow.

Head and Thorax. Vertex wider submedially than long at base about 1.1:1, apical margin transverse, lateral carinae nearly straight, submedian carinae not really uniting at apex, basal compartment width at base equal to greatest length. Frons longer in middle line than wide at widest part about 2.4:1, widest at apex, median carina simple. Post-clypeus wider at base than frons at apex, very long, longer than half of frons. Antennae reaching over frontoclypeal suture, basal segment longer than wide, shorter than second about 1:2.2. Post-tibial spur with 23–24 teeth. Tegmina longer than widest part about 3.1:1.

Male Genitalia. Anal segment of male with lateroapical angles widely separated, each produced in a stout spinose process, abruptly narrowing near middle, blunt at apex. Pygofer in profile distinctly wider ventrally than dorsally, at caudal margin strongly produced caudodorsad in a large lobe, slightly twisted near apex, sinuated at apical margin, in caudodorsal view opening longer than width, in ventral medioventral process obsolete, very wide, apical margin slightly concave medially. Phallus somewhat compressed, almost quadrate at base, forking at apex, upper one process slender, longer, directed caudad, lower one process Y-shaped, furcal, common petiole, directed caudodorsad. Diaphragm dorsal margin with a large node protruding cephalad to supporting phallus, ventral margin with a thumb-like process directed caudad. Genital styles very long, slender, sinuate, divergent apically, basal quadrate, abruptly narrowing at basal 1/3, laterobasal angle with moderate, spine-like process, distinct at lateral view.

Material Examined. CHINA: Guizhou Province: 1♂, Dayi (25°17´N, 106°10´E), Wangmo, 24 Sep. 1997, collected by X.-S. Chen; 1♂, 1♀, Maolan (25°42´N, 107°88´E), Libo, 22 Oct. 1998, collected by X.-S. Chen; 2♂♂, Shitou village (24°98´N, 105°82´E), Ceheng, 4 Oct. 2012, collected by X.-H. Hou.

Host plant. Weed.

Distribution. South China ( Taiwan, Yunnan, Guizhou).

Figures

FIGURES 13 – 25. Neunkanodes formosana Yang. (13) Head and thorax, dorsal view; (14) Frons and clypeus; (15) Forewing; (16) Male genitalia, posterior view; (17) Same, left side view; (18) Pygofer, left side view; (19) Same, posterior view; (20) Anal segment, aedeagus and genital style, left lateral view; (21) Anal segment, posterior view; (22) Anal segment, left side view; (23) Aedeagus, left side view; (24) Genital style, left side view; (25) Pygofer, ventral view. Scale bars = 0.5 mm (Figs 13 – 15), 0.2 mm (Figs 16 – 19), 0.1 mm (Figs 20 – 25).