Radicafurcus Qin & Zhang

Qin, Dao-Zheng, Liu, Yang & Zhang, Ya-Lin, 2010, A taxonomic study of Chinese Empoascini (Hemiptera: Cicadellidae: Typhlocybinae) (I), Zootaxa 2481, pp. 52-60 : 53

Radicafurcus Qin & Zhang , gen. nov.

Type species. Radicafurcus breviprocessus Qin & Zhang , sp. n., here designed.

Description. Body small, depressed, and brown. Head broader than pronotum ( Fig. 1 ). Vertex long, anterior margin distinctly produced medially, in profile regularly curving into convex and slightly elongated face ( Fig. 2 ), coronal suture long and distinct ( Fig. 1 ). Fore wing broadened in apical third, all apical veins arise from longitudinal m cell, 3rd apical cell stalked, veins RP and MP’ nearly parallel ( Fig. 3 ). Hind wing with very small area borded by re-emerging AA and AP’ veins; vein CuA unbranched apically ( Fig. 4 ).

Abdodminal apodemes developed and parallel sided ( Fig. 14 ). Male pygofer short and wide, narrowing caudad ( Figs. 5, 6 ), laterocaudal margin of pygofer lobe truncated accompanied by row of rigid microsetae terminally; ventral appendage absent ( Figs. 5, 6 ); dorsal bridge long but less sclerotized in middle dorsocaudad ( Fig. 6 ). Subgenital plate longer than pygofer side, broad at base, setae of basal group undifferentiated, lateral macrosetae not numerous, arranged in single row and reaching apex of plate ( Figs. 5, 7, 13 ). Paramere slim, caudal part strongly narrowing and curved, subapex bearing small dentifer and few setae ( Figs. 7, 12 ). Connective lamellate ( Fig. 7 ). Aedeagus broad at base, with asymmetrical unpaired ventral process arising subbasally, shaft tubular, preatrium very short, without dorsal apodeme, gonopore subapical at left side ( Figs. 8-10 ). Anal tube process short and broad ( Figs. 5, 11 ).

Etymology. The name alludes to the ventrobasal bifurcation of the aedeagus. Gender: masculine.

Remarks. The new genus is similar to Ifuaria Dworakowska, 1994 in having 3 apical veins in fore wing arising from cell m, the 3rd apical cell stalked, veins RP and MP’ nearly parallel; the abdodminal apodemes parallel sided; the ventral pygofer appendage absent, and the lateral macrosetae of the subgenital plate arranged in a single row. However, the new genus differs from the latter in having fore wing cell c narrower than cell r (c cell broader than r cell in Ifuaria ), the laterocaudal margin of the pygofer lobe truncated (angulately produced in Ifuaria ); the subgenital plate lacking macrosetae in the basal group (with macrosetae in basal group in Ifuaria ), the aedeagus not fused with the base of the connective (fused in Ifuaria ), and in having cell aa in the hind wing apparently smaller than that of Ifuaria .

The new genus is similar to Chlorita Fieber in Chinese empoascine fauna by using the key of Qin & Zhang (2008). It differs from Chlorita by the body is slim and depressed (borad in Chlorita ), by the fore wing with all apical veins arise from longitudinal m cell, 3rd apical cell stalked (in Chlorita veins RP and MP’ arise in r cell and only MP”+CuA’ in m cell, 3rd apical cell not stalked), by the anal tube process short and broad (anal tube process much longer in Chlorita ).

Figures

FIGURES 1 – 14. Radicafurcus breviprocessus Qin & Zhang, sp. n., 1, head and thorax, dorsal view; 2, face; 3, fore wing; 4, hind wing; 5, male terminalia, lateral view; 6, pygofer side, dorsal view; 7, subgenital plates, parameres, connective and sternite 9, ventral view; 8, 9, aedeagus, lateral view; 10, same, dorsal view; 11, anal tube process, lateral view; 12, paramere; 13, subgenital plate, dorsal view; 14, abdominal apodeme.