Flatseta, Jiao, Meng & Yang, Maofa, 2015

Jiao, Meng & Yang, Maofa, 2015, Flatseta, a new genus of Dikraneurini (Hemiptera: Cicadellidae: Typhlocybinae) from China, with description of a new species, Zootaxa 3974 (1), pp. 140-144 : 140-141

Flatseta gen. n.

Type species: Flatseta scimitara sp. n.

Description. Color yellowish. Head ( Fig. 2 ) with vertex produced in front, vertex median length longer than width between eye apices; coronal suture distinct, nearly half length of vertex. Face ( Fig. 3 ) depressed in lateral view.

Anteclypeus ( Fig. 4 ) long and narrow in male and female. Pronotum slightly narrower than head. Fore wing ( Fig. 5 ) slightly yellowish, first apical cell wide with small dark spot, second apical cell petiolate. Hind wing ( Fig. 6 ) semitransparent, CuA branched slightly basad of m-cu crossvein, vannal vein branched. Front tibia without preapical macrosetae; hind tibial chaetotaxy PD: 11–12, AD: 13–17, AV: 4, PV: ~27. Hind basitarsus slightly longer than tarsomeres II and III combined, with dorsoapical pair of macrosetae, pointed distally.

Male abdomen ( Fig. 7 ) with apodemes of sternum II well developed. Pygofer (Figs. 8,9,14,15,18,19) broad, short, apex truncate, with numerous densely packed hastate setae distally, sinuate internal ridge present ventrolaterally. Subgenital plates (Figs. 14,15) slender, shorter than pygofer side, tapered distally, with several scattered microsetae. Style ( Fig.10 ) simple, slender throughout length, base slightly tumescent, apex blunt, without conspicuous setae. Connective not fused to aedeagus, Aedeagus ( Figs. 11, 12, 13 ) symmetrical, with paired apical processes; preatrium thin, weakly developed; gonopore apical.

Female pygofer (Figs. 20,21,22), distal margin brown, with several macrosetae, without hastate setae. First valvulae curved (Figs. 24,25), broadened preapically, dorsal sculpture arranged diagonally, ventral sculpture not extended to apex. Second valvulae (Figs. 26,27) enlarged distally, with row of teeth at dorsal margin. Teeth larger with secondary dentition on right valvula compared to weaker teeth on left valvula.

Remarks. Flatseta differs from all other known Typhlocybinae in having flat setae on the male pygofer.

Etymology. The genus name is derived from the English flat setae, and refers to the shape of the setae.

Figures

FIGURES 1 – 13. Flatseta scimitara sp. nov. (male): 1, body, lateral view; 2, head, pronotum, and scutellum, dorsal view; 3, head, pronotum, and scutellum, lateral view; 4, head, ventral view; 5, fore wing; 6, hind wing; 7, abdominal apodeme, ventral view; 8, male genital capsule, ventral view; 9, male genital capsule, ventral view; 10, style, lateral view; 11, connective and aedeagus, ventral view; 12, connective and aedeagus, dorsal view; 13, connective and aedeagus, lateral view.