Neunkanodes 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 : 175

Neunkanodes Yang, 1989

Neunkanodes Yang, 1989: 164 ; Ding, 2006: 575. Type species. Neunkanodes formosana Yang, 1989: 164 , by original designation.

Description. The distinctive characters used by Yang (1989) and Ding (2006) are modified as follows.

Body size. Macropterous form, large size, body length (including forewing): male 4.15–5.00 mm, female 5.05–5.95 mm.

Coloration. General color yellowish brown to reddish brown. Vertex, frons, pro- and mesonotum with median carinae white to yellowish white ( Figs 1 , 13 , 26 ; Yang, 1989: Fig. 68A; Ding, 2006: Fig. 314A). Frons bordered with dark brown to black stripe ( Figs 2 , 14 , 27 ; Yang, 1989: Fig. 68B; Ding, 2006: Fig. 314B). Forewings hyaline, veins dark brown ( Figs 3 , 15 , 28 ; Yang, 1989: Fig. 68C). Abdomen somewhat reddish brown.

Head and Thorax. Head including eyes narrower than pronotum. Vertex longer submedially than wide at base about 1.2:1, apical margin transverse or sinuate, submedian carinae uniting at apex, Y-shaped carina present. Frons longer in middle line than wide at widest part about 2.4–2.8:1, widest at apex or level of ocelli. Rostrum reaching to meta-coxae. Ocelli present. Antennae cylindrical, basal segment longer than wide, shorter than second about 1:2.2–3.5. Pronotum with lateral carinae not attaining hind margin. Spinal formula of hind leg 5–7–4. Post-tibial spur with about 23 teeth.

Male genitalia. Anal segment of male ring-like, lateroapical angles widely separated, each produced in a large spinose process. Pygofer in profile wider ventrally than dorsally, with a large lamellar process produced caudad medially at caudal margin, in posterior view opening longer than width, medioventral process present or absent. Phallus compressed, tubular-shape, with processes. Suspensorium ring-like ventrally. Diaphragm rather broad, dorsal margin roundly produced medially, ventral margin with thumb-like process. Genital styles widely divergent apically, long and fine, with laterobasal angle.

Host plant. Weed.

Distribution. China ( Taiwan, Guizhou, Yunnan).

Remarks. This genus differs from Unkanodes Fennah in having pygofer with a large lamellar process medially at caudal margin, medioventral process present or absent; phallus compressed, with simple processes; diaphragm with a straight and thumb-like process at ventral margin; genital styles abruptly narrowing at basal 1/3, laterobasal angle with spine-like process.

Figures

FIGURES 1 – 12. Neunkanodes bispinatus s p. nov. (1) Head and thorax, dorsal view; (2) Frons and clypeus; (3) Forewing; (4) Male genitalia, posterior view; (5) Same, left side view; (6) Pygofer, left side view; (7) Same, posterior view; (8) Anal segment, aedeagus and genital style, left lateral view; (9) Anal segment, posterior view; (10) Anal segment, left side view; (11) Aedeagus, left side view; (12) Genital style, left side view. Scale bars = 0.5 mm (Figs 1 – 3), 0.2 mm (Figs 4 – 7), 0.1 mm (Figs 8 – 12).

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).

FIGURES 26 – 38. Neunkanodes unispinatus sp. nov. (26) Head and thorax, dorsal view; (27) Frons and clypeus; (28) Forewing; (29) Male genitalia, posterior view; (30) Same, left side view; (31) Pygofer, left side view; (32) Same, posterior view; (33) Anal segment, aedeagus and genital style, left lateral view; (34) Anal segment, posterior view; (35) Anal segment, left side view; (36) Aedeagus, left side view; (37) Genital style, left side view; (38) Pygofer, ventral view. Scale bars = 0.5 mm (Figs 26 – 28), 0.2 mm (Figs 29 – 32), 0.1 mm (Figs 33 – 38).