Stenatkina angustata ( Young, 1986 )

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 : 54-55

Stenatkina angustata ( Young, 1986) ( Figs 1–5 , 44–55 , 93–94 )

Paratkina angustata Young, 1986: 87 .

Stenatkina angustata (Young) : Yang & Li, 1999: 205. Atkinoida angustata (Young) : Cai & He, 2002: 149. Stenatkina angustata (Young) : Yang, Meng & Li, 2007: 465.

Description. Length of males 6.5–7.5 mm, females 8.5–9.0 mm.

Female genitalia. Abdominal sternite VII ( Fig. 44 ), in ventral view, slightly broader than long; posterior margin forming rounded median lobe; lateral margins approximately parallel; surface with few setae mostly on anterior half. Internal sternite VIII without sclerites. Pygofer ( Fig. 45 ), in lateral view, well produced, longer than tall; posterior margin rounded; surface with macrosetae on posterior portion and extending anteriorly along ventral margin, attaining basal margin. Valvifers I ( Fig. 46 ), in lateral view, nearly fanshaped, posterodorsal margin nearly angulate and posteroventral margin broadly rounded. Valvifers II ( Fig. 54 ) with small group of clustered setae near articulation point. Valvulae I, in ventral view ( Figs 93 and 94 ), forming broad concavity (BC) between anterior margins, with membranous area in concavity; in lateral view ( Figs 47–49 ), with dorsal and ventral margins nearly rectilinear behind basal curvature, but ventral margin distinctly curved dorsally near apex; dorsal sculptured area extending from basal curvature to apex, broader on median portion, formed mostly by scale-like processes arranged in oblique lines; ventral sculptured area with scale-like processes arranged in lines on apical portion; ventral interlocking device distinct on basal 1/3 of shaft; apex of shaft acute; dorsal margin forming small denticles on apical portion of shaft. Valvulae II ( Figs 50–53 ), in lateral view, with dorsal margin approximately rectilinear behind basal curvature, ventral margin curved dorsally near apex; apical portion with dorsal margin slightly concave; apex subacute; preapical prominence indistinct; shaft bearing approximately 35 teeth from basal portion to apex; first tooth large, triangular and with long anterior ascending portion, followed by about 10 well produced subtriangular teeth, the latter followed by rectangular ones; each tooth with denticles; apex of shaft with dentate dorsal margin longer than ventral margin; ducts extending toward teeth and toward apical shaft portion. Gonoplacs ( Fig. 55 ), in lateral view, with basal half narrow and apical half moderately expanded, apex subacute, surface with few setae on apical portion.

Distribution. China (Guangdong, Hainan, Guizhou); Vietnam.

Remarks. Young (1986) provided descriptions of the coloration, external features and genitalia of female specimens, but the female genitalia features were briefly described and only abdominal sternite VII was illustrated. Li & Wang (1992) and Yang & Li (1999) provided descriptions of the male genitalia. We provided herein detailed descriptions and illustrations of the female genitalia.

Material examined. 2 females, China, Hainan Province, Jianfengling, 15 May 1997, coll. Yang Mao-fa; 5 males, China, Hainan Province, Wuzhishan, 19–20 May 1997, coll. Yang Mao-fa; 1 female, China, Hainan Province, Wuzhishan, 13–14 April 2009, coll. Yang Zai-hua; 1 female, China, Hainan Province, Limushan, 23 May 1997, coll. Yang Mao-fa; 1 female, China, Hainan Province, Diaoluoshan, 16–18 July 2007, coll. Li Yu-jian; 1 female, China, Hainan Province, Diaoluoshan, 10–12 April 2009, coll. Yang Zai-hua; 1 male, China, Guizhou Province, Luodian County, 7 June 1983, coll. college students.

Figures

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.

FIGURES 44 – 55. Stenatkina angustata (Young, 1986). Female genitalia: (44) Sternite VII, ventral view; (45) pygofer, lateral view; (46) valvifer I, lateral view; (47) valvula I, lateral view; (48) basal portion of valvula I, lateral view; (49) apical portion of valvula I, lateral view; (50) valvula II, lateral view; (51) basal portion of valvula II, lateral view; (52) teeth of median portion of valvula II, lateral view; (53) apical portion of valvula II, lateral view; (54) valvifer II, lateral view; (55) 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.