3.5. 5.

Tricentrus colligatoclypei Yuan & Cui, 1988: 134; Yuan & Chou, 2002: 394–395.

Diagnosis.

Suprahumeral horns base thick and sturdy, elongate sideways and upwards; absent in male. Posterior pronotal process straight and extended, apex stays in the tornus (Fig. S 16 A – D). Frontoclypeal margins expanding gradually towards apex, on the same arc with the frontoclypeal lobes apex. The frontoclypeus demonstrates coplanar alignment with the vertex ventral margins (Fig. S 16 E, F).

Redescription.

Measurements: Body length: males (n = 2): 4.4–4.5 mm, females (n = 2): 4.9–5.0 mm; forewing length: males (n = 2): 3.4–3.5 mm, females (n = 2): 3.7–4.5 mm; width between humeral angles apices: males (n = 2): 2.4–2.5 mm, females (n = 2): 2.8–3.3 mm; width between suprahumeral horns apices: females (n = 2): 2.2–2.6 mm. — Coloration: Female body black brown, male black (Fig. S 16 A – D). Eyes yellowish brown with brown scattered patches, ocelli yellowish brown (Fig. S 16 E, F). Legs coxae, trochanter, femur black; tibia, tarsus and claw brown. Forewing yellow-brown, tornus neighboring brown; veins R 1 medial, r-m, m-cu, Cu apical, brown; male basal half transparent (Fig. S 16 G, H). — Head: Vertex with dorsal margins convex, slight depression in the center; ventral margins oblique and weakly wavy. Ocelli slightly closer to inner margins of eyes than to each other. — Male genitalia: Pygofer rectangular in lateral view, dorsal margins convex (Fig. S 17 A, B, D). Sternite IX trapezoidal with slightly concave ventral margin in ventral view (Fig. S 17 D). Lateral plate finger-like in dorsal half, right portion weakly depressed, margins setose (Fig. S 17 G). More than basal half of subgenital plate fused (Fig. S 17 D). Style clasp angled dorsally; apex laterally recurved, inner surface with setae; connective n-shaped (Fig. S 17 C). Aedeagus uncinate in lateral view, distally with coarse denticles in distal half of dorsal margin; gonopore oval occupying a quarter of the aedeagus (Fig. S 17 E, F). — Female genitalia: Pygofer with angulate, obvious base and weakly tubular distal portion in lateral view; surface densely setose throughout (Fig. S 18 A, B). Sternite VII with posterior margin deeply concave, accounting for nearly all of the width (Fig. S 18 C). First valvulae knife-shaped, exhibiting weak curvature; dorsal margin depressed, with fine longitudinal striae on the one-third and terminating in an acuminate apex (Fig. S 18 D). Second valvulae similar in shape to the first valvulae, dorsal margin of the posterior third bearing contiguous denticles, with the base denticle distinctively isolated (Fig. S 18 E). Third valvulae (gonoplac) broadly rounded distally (Fig. S 18 F).

Material examined.

CHINA • 2 ♂♂ 2 ♀♀; Xizang Prov., Linzhi City, Motuo County, Beibeng Town (29°15'14.857"N, 95°12'16.013"E), 935 m; 30 June 2022; Hong-Li He leg.

Distribution.

China (Xizang).

Remarks.

This species was initially documented based on a female specimen collected in Beibeng Town, Motuo County, China (Xizang). Following this original discovery, no further records were documented for over a century until our recent recollection at the type locality. Here, we provide the first comprehensive morphological description of male specimens, complemented by complete mitochondrial genome sequencing. These critical additions enable accurate identification and pairing of male specimens within this taxon.