Tropidocephala sinica Ding, 2006

Figs 17–18, Table 1

Tropidocephala sinica Ding, 2006: 164, fig. 76.

Material examined

CHINA • 4 ♂♂, 1 ♀; Hainan Province, Datian National Natural Reserve; 19°06′ N, 108°47′ E; 12–13 Apr. 2013; Bin Li, Yu-Bo Zhang and Jian-Kun Long leg.; IEGU • 6 ♂♂; Hainan Province, Yinggeling National Natural Reserve; 19°02′ N, 109°34′ E; 10–12 Aug. 2015; Zheng-Xiang Zhou, Qiang Luo and Ya-Lin Yao leg.; IEGU • 5 ♂♂, 3 ♀♀; Hainan Province, Limushan National Forest Park; 19°12′ N, 109°46′ E; 4 May 2017; Yong-Shun Ding leg.; IEGU .

Redescription

MEASUREMENTS. Body length including forewing: male 2.9–3.1 mm (N = 15), female 3.2–3.4 mm (N = 4).

COLORATION. Vertex, pronotum and mesonotum (Fig. 17A–D) bluish-yellow. Middle carinae of vertex with blackish brown striped spot on both sides. Lateral border areas of pronotum and mesonotum slightly dark brown. Frons (Fig. 17E) brown-blue. Apical part of frons, clypeus (Fig. 17E) and genae (Fig. 17B, D) black. Antennae (Fig. 17A–E) yellowish brown, circular spot at apex of first segment, second segment with oblique spot from base to middle, circular spot at apex dark brown. Forewings (Fig. 17F) dark brown, apex of apical and postcostal cells with 5–6 different-sized transparent spots, inner side of crossveins with 3 dark brown burl spots, middle part big.

HEAD AND THORAX. Vertex (Figs 17C, 18A) triangular, longer in midline slightly than wide at base (1.1:1). Frons (Figs 17E, 18B) elliptic, widest in the middle, base narrower than end, longer in middle line than wide at widest part (2.0:1), with obvious median carinae. Antennae (Figs 17E, 18B) with first segment shorter than second segment about 1:2.0. Pronotum (Figs 17C, 18A) same length as vertex. Mesonotum (Figs 17C, 18A) longer than 1.2 × pronotum and vertex combined, median carinae extend to terminal part of scutellum. Forewings (Fig. 17F) slightly broadened apically, longer than maximal width (2.4:1).

MALE GENITALIA. Pygofer (Fig. 18C–D) ventral margin longer than dorsal margin in lateral view, in posterior view with opening longer than wide, lateral margin each with triangular process, medioventral process lamellar, apical margin truncate. Anal segment (Fig. 18C–E) long and large, without anal process, anal style small. Genital styles (Fig. 18F–G) slender, apical part round, inner and outer margins concave. Aedeagus (Fig. 18H–I) with phallobase, phallus slender, tubular, curved ventrally near middle, apical part cuspidal, phallobase equal in length to phallus, apical part round.

Host plant

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

Distribution

China (Hainan, Yunnan provinces).