Tropidocephala sinuosa Yang & Yang, 1986

Lv, Sha-Sha, Li, Hong-Xing, Zhang, Yu-Bo, Yang, Lin & Chen, Xiang-Sheng, 2025, Review of the Chinese species of the genus Tropidocephala Stål, 1853 (Hemiptera: Fulgoromorpha: Delphacidae), with descriptions of two new species, European Journal of Taxonomy 981, pp. 114-154 : 145-146

Tropidocephala sinuosa Yang & Yang, 1986

Figs 19–20 , Table 1

Tropidocephala sinuosa Yang & Yang, 1986: 28 , fig. 14.

Tropidocephala sinuosa – Ding 2006: 176, fig. 85.

Material examined

CHINA • 4 ♂♂, 2 ♀♀; Hainan Province, Datian National Natural Reserve ; 19°06′ N, 108°47′ E; 14 Apr. 2013; Bin Li and Ji-Chun Xing leg.; IEGU .

Redescription

MEASUREMENTS. Body length including forewing: male 3.5–3.7 mm (N = 4), female 3.9–4.2 mm (N = 2).

COLORATION. General color light yellow to orange ( Fig. 19A–B ). Forewings ( Fig. 19F ) transparent, yellowish brown, with large yellow spot near the middle, smoky brown band near apex.

HEAD AND THORAX. Vertex ( Figs 19C , 20A ) triangular, apex far out in front of eyes, longer in midline than wide at base (2.8:1). Frons ( Figs 19E , 20B ) nearly diamond-shaped, widest in middle, base obviously narrower than end, longer in middle line than wide at widest part (2.7:1), with obvious median carinae. Antennae ( Figs 19E , 20B ) with first segment shorter than second segment about 1:2.1. Pronotum ( Figs 19C , 20A ) shorter than vertex about 0.3: 1 in midline. Mesonotum ( Figs 19C , 20A ) longer than 0.6× pronotum and vertex combined, median carinae extend to terminal part of scutellum. Forewings ( Fig. 19F ) slightly broadened apically, longer than maximal width (2.6:1).

MALE GENITALIA. Pygofer ( Fig. 20C–D ) ventral margin longer than dorsal margin in lateral view, in posterior view medioventral process small, lamellar, lateral margins with long spiny process. Anal segment ( Fig. 20C–E ) large, without anal process, longer than wide in lateral view, anal style long and large. Genital styles ( Fig. 20F–G ) slender, undulant, apical part cuspidal, with triangular process at basal ⅓. Aedeagus ( Fig. 20H–I ) with phallobase, phallus slender, tubular, curved ventrally medially, tapering to apex; phallobase wide and long, bend accordingly to phallus, basal part with slender process, apex of right side with lobate process toward ventrally.

Host plant

Imperata cylindrica (L.) P. Beauv. ( Poales , Poaceae ).

Distribution

China (Hainan, Taiwan provinces).

Figures

Fig. 19. Tropidocephala sinuosa Yang & Yang, 1986, ♂ (IEGU). A. Habitus, dorsal view. B. Habitus, lateral view. C. Head and thorax, dorsal view. D. Head and thorax, lateral view. E. Frons, ventral view. F. Forewing.

Fig. 20. Tropidocephala sinuosa Yang & Yang, 1986, ♂ (IEGU). A. Head and thorax, dorsal view. B. Frons, ventral view. C. Genitalia, posterior view. D. Genitalia, lateral view. E. Anal segment and aedeagus, lateral view. F. Genital style, posterior view. G. Genital style, lateral view. H. Aedeagus, lateral view. I. Aedeagus, posterior view. Scale bars = 0.2 mm.