Tropidocephala yunnanensis sp. nov.

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Figs 21–22

Diagnosis

The salient features of the new species include: vertex (Figs 21C, 22A) slightly longer than pronotum; middle carinae of vertex, pronotum and mesonotum (Fig. 21A, C) with dark lines on both sides; inner side of forewing (Fig. 21F) crossveins without dark brown burl spots; medioventral process of pygofer (Fig. 22C) small, triangular; anal segment (Fig. 22C) with apical margin of two lateral angle round; genital styles (Fig. 22F–G) long and narrow, slightly wavy.

Etymology

The specific epithet name is derived from the name of the type locality, Yunnan Province.

Type material

Holotype

CHINA • ♂; Yunnan Province, Mengla County, Mohan Town; 21°11′ N, 101°41′ E; 31 Aug. 2017; Yan Zhi leg.; IEGU.

Paratypes

CHINA • 16 ♂♂, 6 ♀♀; Yunnan Province, Yingjiang County, Nabang Town; 24°45′ N, 97°34′ E; 18 Aug. 2018; Hong-Xing Li leg.; IEGU • 2 ♂♂, 2 ♀♀; Yunnan Province, Mengla County, Mohan Town; 21°11′ N, 101°41′ E; 16 Jun. 2019; Feng-E Li leg.; IEGU • 7 ♂♂, 1 ♀; Yunnan Province, Sun River National Forest Park; 22°36′ N, 101°06′ E; 27 Jun. 2019; Hong-Xing Li; IEGU .

Description

MEASUREMENTS. Body length including forewing: male 2.4–2.5 mm (N = 25), female 2.6–2.8 mm (N = 9).

COLORATION. Vertex and pronotum (Fig. 21A–D) deep tawny with greenish, mesonotum (Fig. 21A–D) deep tawny, median carinae of vertex, pro- and mesonotum each with dark brown stripe on both sides. Frons (Fig. 21E) light brownish yellow with virescent. Clypeus (Fig. 21E) yellowish. Apical part of rostrum (Fig. 21E) brown-black. Antennae (Fig. 21A–E) grayish yellow, apical part of first segment and apical and middle of second segment each with dark brown ring-like marking. Outer side of tegula dark brown, inner side tawny. Forewings (Fig. 21F) grayish white, transparent, faint yellowish brown spots or stripes along the longitudinal and transverse veins, a small dark brown spot on tip of each terminal cells.

HEAD AND THORAX. Vertex (Figs 21C, 22A) longer in midline than wide at base (1.3:1). Frons (Figs 21E, 22B) oblong, longer in middle line than wide at widest part (1.6:1), basal margin triangular, median carinae simple. Antennae (Figs 21E, 22B) with first segment shorter than second segment about 1:1.6. Pronotum (Figs 21C, 22A) shorter than vertex about 0.8: 1 in midline. Mesonotum (Figs 21C, 22A) longer than 1.6× pronotum and vertex combined, median carinae extend to terminal part of scutellum. Forewings (Fig. 21F) slightly broadened apically, longer than maximal width (2.5:1).

MALE GENITALIA. Pygofer (Fig. 22C–D) ventral margin longer than dorsal margin in lateral view, in posterior view with opening longer than wide, with short and triangular medioventral process, without lateroventral process. Anal segment (Fig. 22C–E) cylindric, without anal process, wider than long in lateral view, apical margin of two lateral angle round, anal style long and big. Genital styles (Fig. 22F– G) small, long and narrow, basal part wide, apical part narrow, apical margin serrated, convex outward at basal ½. Aedeagus (Fig. 22H–I) with phallobase, phallus wide and long, tubular, basal ⅓ wider, curved ventrally; phallobase slender, basal ⅔ wider, bend accordingly to phallus.

Host plant

Unknown.

Distribution

China (Yunnan Province).

Remarks

This species is similar to Tropidocephala touchi Kuoh, 1979, but differs from the latter in: (1) anal segment broad, cylindric, apical margin of two sides rounded in posterior view (anal segment small, annular, apical margin of two sides triangular in posterior view in T. touchi); (2) pygofer with short and triangular medioventral process (pygofer without short and triangular medioventral process in T. touchi); (3) basal part of aedeagus without a arcuate slender process directed dorsad (basal part of aedeagus with a arcuate slender process directed dorsad in T. touchi).