3.5. 8.Tricentrus walkeriMetcalf & Wade, 1965 Centrotus capreolus Walker, 1851: 627. Tricentrus capreolus Stål, 1870: 728; Funkhouser, 1927: 498; Goding, 1939: 317, 324; Funkhouser, 1950: 209. Tricentrus walkeri Metcalf & Wade, 1965: 412; Yuan & Chou, 2002: 439. Diagnosis. Suprahumeral horns slim and short, apex blunt, elongate sideways and upwards, dorsal side flattened; absence in male. Aedeagus uncinate in lateral view, slender in posterior view; base with ventral margins slightly concavity, dorsal margin bearing two paired spinose processes located in the medial, and apical respectively, medial maximum development, subapical smallest; gonopore slender-elliptical, occupying nearly a half of the aedeagus (Fig. S 27 E, F). Redescription. Measurements: Body length: males (n = 4): 6.0– 6.2 mm, females (n = 10): 6.1–7.0 mm; forewing length: male (n = 4): 5.4–5.5 mm, females (n = 10): 5.1–6.2 mm; width between humeral angles apices: males (n = 4): 3.1–3.2 mm, females (n = 10): 3.1–3.5 mm; width between suprahumeral horns apices: females (n = 10): 3.5–4.0 mm. — Coloration: Body black-brown with gold hairs (Fig. 23 A 1 – C 1, a 1 – b 1). Forewing smoke-yellow, bearing four alternating transverse bands: two transparent (basal and medial) alternating with two light brown bands, brown at distal end (Fig. 23 A 4 – C 4). Legs coxae, trochanter, femur black; tibia black- brown, tarsus orange, claw yellow brown. — Head: Vertex with dorsal margins bow-shaped obviously, slightly depression in the center; ventral margins oblique and weakly wavy. Ocelli slightly closer to inner margins of eyes than to each other. Frontoclypeal margins expanding gradually towards apex and frontoclypeal lobes distinct not extending to apex of frontoclypeus (Fig. 23 A 3 – C 3, a 3 – b 3). — Thorax: Posterior pronotal process ridged, weak depression on the base, apex dorsal margins slightly deflexed ventrad (Fig. 23 A 2 – C 2, a 2 – b 2). — Male genitalia: Pygofer narrow rectangular in lateral view, suffer with distinct lateral carina (Fig. 24 A – B, D). Sternite IX rectangular with slightly concave ventral and lateral margin in ventral view (Fig. 24 D). Lateral plate exhibits a scalene triangular configuration, with the dextral aspect demonstrating shallow concavity (Fig. 24 G). Basal more than a half of subgenital plate fused (Fig. 24 D). Style clasp angled dorsally; style shank arc, apex lateral recurved, and margins acuminate, inner surface with setae; connective n-shaped (Fig. 24 C). — Female genitalia: Pygofer with elliptical base and weakly tubular distal portion in lateral view; surface densely setose throughout (Fig. 25 A – B). Sternite VII exhibits V-shaped, with posterior margin deeply concave, account for near all of the width (Fig. 25 C). First valvulae knife-shaped, exhibiting weakly curvature in the near medial; dorsal margin with fine longitudinal striae more than a half and terminating in an acuminate apex (Fig. 25 D). Second valvulae similar in shape to the first valvulae, dorsal margin of the posterior thirds bearing contiguous denticles, and base denticle obvious (Fig. 25 E). Third valvulae (gonoplac) broadly rounded distally (Fig. 25 F). Material examined. CHINA • 4 ♀♀; Guangxi Prov., Guilin City, Lingui District, Wantian Town (25°36'43.989"N, 109°57'39.131"E), 1600 m; 4 July 2023, Yongjin Sui, Fenge Li leg. CHINA • 3 ♂♂ 4 ♀♀; Guangdong Prov., Ruyuan City, Shixing County, Luoba Town (24°50'36.230"N, 114°13'3.440"E), 261 m; 14 June 2023; Shasha Lv, Yong-Jing Sui leg. CHINA • 1 ♂ 2 ♀♀; Guizhou Prov., Kaili City, Rongjiang County (26°18'19.867"N, 108°21'29.996"E), Ying-Jian Wang leg. Distribution. China (Anhui, Hubei, Fujian, Hunan, Guangxi, Guangdong); Philippines. Remarks. This species is similar to T. obesus Funkhouser, 1942 in morphological features of pronotum and forewing, but differs from the later in: (1) suprahumeral horns triangular in dorsal view, ungenerous in head and pronotum in anterior view (exhibits a sub-rectangular configuration in dorsal view, thick and sturdy in T. obesus); (2) aedeagus with medial spinose processes obviously longer, and slender in posterior view (medial spinose processes normality and not slender in T. obesus); (3) style clasp apex with margins acuminate (a truncate configuration in T. obesus).

Published as part of Li, Feng-E, Yang, Lin, Long, Jian-Kun, Chang, Zhi-Min & Chen, Xiang-Sheng, 2026, Integrative taxonomy of diversification treehopper Tricentrus (Hemiptera: Membracidae: Centrotinae) from China shed their phylogenomic relationship and the evolutionary history, pp. 215-233 in Arthropod Systematics & Phylogeny 84 on pages 215-233, DOI: 10.3897/asp.84.e164719