Xaniona falcata, Yan & Yang, 2017

Yan, Bin & Yang, Mao-Fa, 2017, Taxonomic study of the leafhopper genera Farynala Dworakowska and Xaniona Zhang & Huang (Hemiptera: Cicadellidae: Typhlocybinae: Typhlocybini), with descriptions of three new species from China, Zootaxa 4276 (4), pp. 519-528 : 527

Xaniona falcata sp. nov.

( Figs 9–12 , 33–40 )

Type material. Holotype, ♂, Anzihe, Chongzhou , Sichuan Province, altitude 1874 m, 31 July 2016, coll. Bin Yan. Paratypes, 8 ♂♂, same data as holotype.

Length of male 3.5–3.7 mm.

Coloration. Body light yellowish, except middle part of pronotum and scutellum with brownish black; eyes brownish. Face yellowish-brown. Fore wing yellowish, brochosome-field whitish grey ( Figs 9–12 , 34 ).

External features. Crown rounded, coronal suture distinct and not extended to anterior margin of eyes; length of crown less than interocular width, and width of crown slightly less than pronotal width. Face strongly elevated. Transverse impression distinct at near middle of scutellum. Fore wing with 2nd cell largest, 3rd cell subtriangular, stalked with stem short. Hind wing with two crossveins ( Figs 9–12 , 34, 35 ).

Abdominal apodemes reaching middle of 5th sternite ( Fig. 36 ).

Male genitalia. Anal tube well developed. Lobe of pygofer rectangular in lateral view, shorter than subgenital plate, without process; with inner sclerotic ledge in basal middle part; with large macrosetae near lower margin, and three small stout macrosetae at posterior margin ( Fig. 33 ). Subgenital plate longer, narrowed gradually towards apex, with rigid macroseta on outside basally, row of short macrosetae along outer margin, and several microsetae arranged on mesal margin; row of short rigid microsetae scattered on outer apex ( Figs 33, 37 ). Paramere slender, with row of microsetae on outer margin, apex not curved ( Figs 33, 37 ). Connective elongate, sharp-edged triangular ( Fig. 37 ). Aedeagus dorsal apodeme slightly broader than preatrium in lateral view, aedeagal shaft with serrate plates on middle of dorsal margin; with three apical processes, one process straight and pointed dorsad, pair of processes strongly curved laterally to opposite side, crossed preapically, gonopore apical ( Figs 38–40 ).

Etymology. The species name refers to the sickle-like apical processes on the aedeagal shaft.

Remarks. This new species is closely related to Xaniona cerina Zhang & Huang , but it can be distinguished by the more robust aedeagus, with the shaft distinctly broadened with teeth dorsally on the middle part of the shaft ( Fig. 39 ). The number and positions of the aedeagal processes are also different.

Figures

FIGURES 1 – 12. Habitus (dorsal and lateral views) and face. 1 – 4, Farynala dextra sp. nov., 5 – 8, Farynala sinistra sp. nov., 9 – 12, Xaniona falcata sp. nov.. Scale: 0.5 mm.

FIGURES 33 – 40. Xaniona falcata sp. nov. 33, male pygofer, subgenital plate and paramere, lateral view. 34, fore wing. 35, hind wing. 36, abdominal apodemes, ventral view. 37, subgenital plate, paramere and connective, dorsal view. 38, aedeagus, ventral view. 39, aedeagus, lateral view. 40, aedeagus, dorsal view.