Tropidocephala serendiba

Tropidocephala serendiba (Melichar, 1903) Figs 15–16, 23, Table 1 Orchesma serendiba Melichar, 1903: 95, pl. 2 fig. 5. Orchesma signata Distant, 1912: 192. Tropidocephala signata – Muir 1921: 480. Orchesma serendiba – Metcalf 1943: 98. Tropidocephala serendiba – Fennah 1975: 85. Material examined CHINA • 1 ♂, 3 ♀♀; Yunnan Province, Mengla County, Menglun Town; 21°55′ N, 101°15′ E; 12 Mar. 2017; Ying-Jian Wang leg.; IEGU • 6 ♂♂, 6 ♀♀; Yunnan Province, Yingjiang National Wetland Park; 24°41′ N, 97°56′ E; 16 Aug. 2018; Hong-Xing Li leg.; IEGU • 1 ♂; Yunnan Province, Jinghong City, Menglong Town; 21°35′ N, 100°41′ E; 21 Jun. 2019; Hong-Xing Li leg.; IEGU. Redescription MEASUREMENTS. Body length including forewing: male 4.0– 4.2 mm (N = 8), female 4.2–4.5 mm (N = 9). COLORATION. General (Fig. 15A–B) color rust yellow or rust brown. Vertex, pronotum and mesonotum (Fig. 15A–D) rust yellow. Middle carinae of vertex grayish yellow, with black fine line on both sides. Frons, genae and clypeus (Fig. 15D–E) rusty yellow with reddish. Eyes (Fig. 15A–E) dark brown, ocelli reddish brown. Antennae (Fig. 15A–E) light yellowish brown, apical part of first segment and middle part of second segment each with black brown ring-like stripe. Pronotum (Fig. 15A, C) yellowish-white near tegula, carinae gray, each with fine line on both sides. Middle carinae of mesonotum (Fig. 15A, C) light brown, with fine line on both sides, lateral carinae brown. Forewings (Fig. 15F) yellowish brown, 2 large transparent spots near basal and middle parts, apical ½ with multiple transparent spots, apical posterior area with dark gray marking, inner side of crossveins with 2 dark brown burl spots, burl spots with yellowish-white particles. HEAD AND THORAX. Vertex (Figs 15C, 16A) triangular, longer in midline nearly equal to base width. Frons (Figs 15E, 16B) elliptic, widest in middle, base narrower than end, longer in middle line than wide at widest part (2.2:1), with obvious median carinae. Antennae (Figs 15E, 16B) with first segment shorter than second segment about 1:2.0. Pronotum (Figs 15C, 16A) shorter than vertex about 0.9: 1 in midline, with 5 carinae. Mesonotum (Figs 15C, 16A) longer than 1.4× pronotum and vertex combined, median carinae extend to terminal part of scutellum. Forewings (Fig. 15F) slightly broadened apically, longer than maximal width (2.6:1). MALE GENITALIA. Pygofer (Fig. 16C–D) ventral margin longer than dorsal margin in lateral view, in posterior view with opening longer than wide, with rod-like medioventral process, simple. Anal segment (Fig. 16C–E) cylindric, without anal process, lateral margins deep concave in the middle, wider than long in lateral view, anal style long. Genital styles (Fig. 16F–G) broad lamellar, apex slightly wider than base, inner margin concave, inner apical angle with slender process toward inner side, basal angle with large process, tapering to apex, outer margin with many serrated processes. Aedeagus (Fig. 16H–I) with phallobase, phallus slender, tubular, curved ventrally medially, apical part cuspidal, protruding from dorsal of phallobase; phallobase wide and long, bend accordingly to phallus. Host plant Imperata cylindrica (L.) P. Beauv. (Poales, Poaceae). Distribution China (Yunnan Province), Vietnam.