Atkinsoniella biundulata, Meng, Ze-Hong, Yang, Mao-Fa & Ni, Jun-Qiang, 2010

Meng, Ze-Hong, Yang, Mao-Fa & Ni, Jun-Qiang, 2010, Three new species of Atkinsoniella from China (Hemiptera: Cicadellidae: Cicadellini), Zootaxa 2654, pp. 41-51 : 42-44

Atkinsoniella biundulata sp. nov.

( Figs. 1–14 )

Description. Length of male 8.1mm, female 8.2mm.

Head, thorax and forewing black in dorsal view. Crown with slender pale stripe along frontogenal suture attaining each ocellus; with small pale stripe around ocelli; eyes dark brown with pale margin in female. Forewing red in basal half. Face mostly black. Lateral and ventral portion of thorax black. Abdomen black in ventral view; sternites with posterior margins pale. Legs pale; tibiae and tarsi of prothoracic legs black; meso- and metatibia black; mid- and meta black apically.

Head produced, anterior margin broadly round; median length of crown about two-thirds interocular width; ocelli located slightly behind imaginary line between anterior eye angles; with fovea between ocelli and eyes; frontogenal suture extending onto crown, attaining ocelli; frons flattened medially; muscle impressions distinct; epistomal suture distinct medially. Pronotum broader than head, lateral margins slightly convergent anteriorly and posterior margin shallowly concave medially; disk with median and posterior portion slightly transversely rugulose; mesonotum with scutellum convex and rugose. Forewing with four apical cells, base of second and third cells aligned transversely. Hindleg with femoral setal formula 2:1:1, but female paratype with right hindleg 2:1:1:1.

Male pygofer, in lateral view, with posterodorsal margin forming lobe, triangular; dorsal margin biundulate; with short macrosetae on posterior margin and long macrosetae on dorso-median portion; pygofer process extending posterodorsally farther than dorsoapical margin and with acute apex. Subgenital plate with broad base, dorsally curved along apical half, with uniseriate macrosetae and short microsetae on ventral surface. Aedeagus subcylindrical, with unciform basal process articulating with paraphyses; slightly narrowed toward apex, and with pair of inner angular processes apically. Paraphyses as long as aedeagus, rugose on median-ventral margin, dorsally curved abruptly apically and articulating with aedeagus. Connective Yshaped. Style without preapical lobe, apically unciform.

Female abdominal sternite VII, in ventral view, broader than long; posterior margin with three lobes; lateral margins slightly convergent posteriorly; surface, on posteromedian portion, with some transverse striae and with small setae mostly on anterior half. Pygofer, in lateral view, produced posteriorly, posterior margin with subacute apex; surface with macrosetae on posterior portion and extending anteriorly along ventral margin. Second valvulae of ovipositor, in lateral view, expanded beyond basal curvature, shaft narrowing slightly toward rounded apex, preapical prominence indistinct; teeth distributed from expanded portion to apical portion of shaft, two most basal teeth triangular, followed by larger ones, then progressively narrower toward apical portion; all teeth and dorsal and ventral margins of apical portion of shaft bearing denticles.

Type material. Holotype, male: China, Yunnan Prov., Gongshan county, Cikai town (27°47΄46ʺ N, 98°35΄02ʺ E), 1 September 2005, coll. Liu Ye. Paratype: female, Yunnan Prov., Tengchong county, 17 August 2006, coll. Song Qiong-zhang.

Etymology. The specific epithet, biundulata , is of Latin derivation and refers to the biundulate dorsal margin of the male pygofer.

Remarks. This species is similar to A. lii Yang & Zhang and A. nigriscens Yang & Li in appearance, but can be readily distiguished by the male genitalia. In A. nigriscens , the body is obviously larger in the male, the male pygofer process has a short ramus near the apex, and the paraphysis divides into two branches at the middle that embrace the aedeagus ( Yang & Li 2004). In A. lii , the forewing has the claval suture black, the male pygofer is subrectangular, the subgenital plate has multiseriate macrosetae, and the aedeagus is not subcylindrical and lacks an unciform basal process articulating with the paraphyses ( Yang & Zhang 2000).

Figures

FIGURES 1 – 3. Atkinsoniella biundulata sp. nov., body of male holotype: (1) dorsal view; (2) lateral view; (3) ventral view.

FIGURES 4 – 14. Atkinsoniella biundulata sp. nov., male genitalia: (4) subgenital plate, ventral view; (5) aedeagus and paraphyses, ventral view; (6) aedeagus, lateral view; (7) paraphyses, lateral view; (8) connective, dorsal view; (9) style, dorsal view; (10) pygofer, lateral view; female genitalia: (11) second valvula, lateral view; (12) sternite VII, ventral view; (13) apical portion of second valvula, lateral view; (14) pygofer, lateral view.