Stenatkina moliensis, Meng, Ze-Hong, Yang, Mao-Fa & Li, Zi-Zhong, 2012

Meng, Ze-Hong, Yang, Mao-Fa & Li, Zi-Zhong, 2012, Two new species of Stenatkina Young, 1986 from China with comparative notes on the female genitalia (Hemiptera: Cicadellidae: Cicadellini), Zootaxa 3231, pp. 53-67 : 55

Stenatkina moliensis sp. nov. ( Figs 17–30 , 56–67 , 95 )

Description. Length of males 6.7–7.1 mm, females 8.5–8.8 mm.

Coloration. Head, thorax and forewing black in dorsal view. Dorsum with longitudinal interrupted yellow stripe from crown to apex of scutellum, but indistinct in males ( Fig. 17 ). In females, pronotum with two or three yellow spots near lateral margins. Forewing with hyaline band near costal margin, and in females often with yellow stripes or spots on basal half of clavus, one-third and two-third of corium, basal and median of inner margin; in males those markings not clear. Face with upper portion black, other portions and sternum yellowish-white. Abdominal sternites yellowish-white. Legs mostly yellowish-white, with tibiae and tarsi of prothoracic legs infuscate and tarsal apex of all legs black brown.

External features. Crown slightly curved upward in females. Head well produced, anterior margin angulate; median length of crown distinctly longer than interocular width; with longitudinal fovea between ocelli, and between ocelli and eyes; ocelli located on imaginary line between anterior eye angles; lateral frontal sutures extending onto crown, attaining ocelli; frontoclypeus convex; muscle impressions distinct; transclypeal suture obscure medially. Pronotum as broad as head, posterior margin with subtriangular concavity; mesonotum with surface of scutellum slightly convex, transverse depression nearly straight. Forewing with apical membrane indistinct, with four apical cells, base of second cell more proximal than base of third in males, base of second and third cell aligned transversely in females. Hindleg with femoral setal formula 2:1:0.

Male genitalia. Pygofer ( Fig. 23 ), in lateral view, with posterior margin broadly convex; with macrosetae on posterior and ventral margins; ventral margin without process. Subgenital plate ( Fig. 24 ) produced posteriorly farther than pygofer, progressively narrower toward apical portion, dorsally curved along apical half; surface with longitudinal uniseriate macrosetae on median portion and short microsetae on outer lateral margin. Aedeagus ( Fig. 25 ) with basal half of shaft curved ventrally and apical half straightly produced posteriorly; preatrium with base appressed to median portion of paraphyses, apical half separated. Paraphyses ( Fig. 26 ) S-shaped, articulation joint to aedeagus slightly expanded; apical portion with long slender process, in ventral view, with pair of curved processes ( Figs 27 and 28 ). Connective ( Fig. 29 ) broadly Y-shaped, stalk short. Style ( Fig. 30 ) with basal half straight, apical half curved, apex slightly furcated.

Female genitalia ( Figs 56–67 ). The features of the ovipositor are similar to those of Stenatkina angustata (Young) . However, the abdominal sternite VII ( Fig. 56 ), in ventral view, is longer than broad, with the posterior margin forming two distinct lateral lobes and an inconspicuous median lobe. Other features similar to S. angustata .

Etymology. The specific epithet, moliensis , refers to the type locality.

Distribution. China (Yunnan).

Remarks. This species is similar to Stenatkina angustata (Young) in appearance ( Figs 1–4 ), but it differs in having the subgenital plate broader ( Fig. 24 ) and the apex of the paraphyses with a pair of processes ( Figs 26–28 ). In addition, males usually have few spots and stripes in S. moliensis ( Figs 17–19 ), but distinct spots and stripes are present in both males and females of S. angustata ( Figs 1–4 ).

Material examined. Holotype, male, China, Yunnan Province, Ruili County, Moli, Alt. 770m, 15 June 2009, coll. Yang Zai-hua and Li Bin. Paratypes: 2 males, 2 females, same data as holotype.

Figures

FIGURES 17 – 30. Stenatkina moliensis sp. nov. Body of male (6.8 mm): (17) Dorsal view; (18) lateral view; (19) ventral view. Body of female (8.6 mm): (20) Dorsal view; (21) lateral view; (22) ventral view. Male genitalia: (23) Pygofer, lateral view; (24) subgenital plate, ventral view; (25) aedeagus, lateral view; (26) paraphyses, lateral view; (27) apical portion of paraphyses, ventral view; (28) apical portion of paraphyses, posteroventral view; (29) connective, dorsal view; (30) style, dorsal view.

FIGURES 56 – 67. Stenatkina moliensis sp. nov. Female genitalia: (56) Sternite VII, ventral view; (57) pygofer, lateral view; (58) valvifer I, lateral view; (59) valvula I, lateral view; (60) basal portion of valvula I, lateral view; (61) apical portion of valvula I, lateral view; (62) valvula II, lateral view; (63) basal portion of valvula II, lateral view; (64) teeth of median portion of valvula II, lateral view; (65) apical portion of valvula II, lateral view; (66) valvifer II, lateral view; (67) gonoplac, lateral view. Scale bars in millimeters.

FIGURES 93 – 98. Valvifers I and bases of valvulae I, ventral view: (93), (94) Stenatkina angustata (Young, 1986); (95) S. moliensis sp. nov.; (96), (97) S. luteimacula sp. nov.; (98) S. albopennis Yang, 2007. BC: broad concavity; FL: flower-like lobe. Scale bars in millimeters.

FIGURES 1 – 16. Stenatkina angustata (Young, 1986): (1) Body of male (7.1 mm), dorsal view; (2) body of male, lateral view; (3) body of female (8.8 mm), dorsal view; (4) body of female, lateral view; (5) aedeagus and paraphyses, lateral view. Stenatkina albopennis Yang, 2007: (6) Body of male (9.1 mm), dorsal view; (7) body of male, lateral view; (8) body of female (10.6 mm), dorsal view; (9) body of female, lateral view; (10) aedeagus and paraphyses, lateral view. Stenatkina heveli Young, 1986: (11) Body of male (8.9 mm), dorsal view; (12) body of male, lateral view; (13) aedeagus and paraphyses, lateral view. Stenatkina bimaculata Yang & Li, 1999: (14) Body of male (7.0 mm), dorsal view; (15) body of male, lateral view; (16) aedeagus and paraphyses, lateral view.