Pseudognaptorina oblonga X.-M. Li, 2025

Pseudognaptorina oblonga X.-M. Li sp. nov.

Type materials.

Holotype: China • ♂ ( MHBU HBU (E) 339912 ): Lhari County, Xizang / 2013-VII-22 / Xing-Long Bai & Jun-Sheng Shan leg. Paratypes: China • 2 ♂♂, 4 ♀♀ ( MHBU HBU (E) 339913 –339918): same data as holotype ; China • 4 ♂♂, 5 ♀♀ ( MHBU HBU (E) 339919 –339927): Arza Township , Lhari County, Xizang / 30°37.104'N, 93°24.307'E / Alt. 4300 m / 2019-VIII-9 / Guo-Dong Ren, Ya-Lin Li & Xing-Long Bai leg. GoogleMaps ; China • 1 ♂ ( MHBU HBU (E) 339928 ): Lhari County, Xizang / 30°45.225'N, 93°13.162'E / Alt. 4762 m / 2023-VII-17 / Xiu-Min Li & Tong-Yang Guo leg. GoogleMaps

Description.

Male (Figs 10 View Figure 10 , 11 A – C View Figure 11 ). Body length 10.8–11.3 mm, width 5.0– 5.1 mm; shiny, black or brownish; antennae, palpi, and tarsi brown.

Head (Fig. 10 A, B View Figure 10 ). Anterior margin of clypeus slightly sinuate. Head widest at eye level. Lateral margin of head with pair of projections between antennal base and oculus, brownish red. Genal margin arcuately converging before eyes. Eyes barely protruding beyond contour of head. Vertex flat or slightly convex, with uniform punctures. Antennae (Fig. 10 D View Figure 10 ) slender and long, reaching beyond pronotal base when posteriorly extended, antennomere III very long, 3.1 times as long as antennomere II, antennomeres VIII – X oval, XI spindle-shaped. Length (width) ratio of antennomeres II – XI as follows: 10.0 (10.0): 31.3 (10.0): 15.9 (10.0): 15.1 (10.0): 16.2 (10.0): 16.2 (10.3): 15.3 (12.5): 15.3 (12.5): 14.8 (12.5): 19.8 (13.8).

Prothorax. Pronotum (Fig. 10 C View Figure 10 ) transverse, 1.40 times as wide as long, widest in middle, 1.67 times as wide as head. Ratio of width on anterior margin to its maximum width and posterior margin 0.57: 1.00: 0.96. Lateral margins of pronotum arcuately narrowing to anterior margin, bordered along entire length; posterior margin straight; anterior margin slightly emarginate; anterior angles widely, obtusely angled; posterior angles almost rectangular. Surface of pronotum very narrowly flattened along lateral margins from base nearly to anterior angles, covered with dense punctation. Hypomera covered shallow longitudinal wrinkles and granules. Prosternum before procoxae gently sloping. Prosternal process gently sloping behind procoxae, forming obtuse projection.

Pterothorax. Elytra oblong-oval and convex, 1.45–1.49 times as long as wide, 1.44–1.46 times as wide as pronotum, widest at apical third. Dorsal surface of elytra passing into outer (deflexed) surface without traces of humeral carina. Outer margin of epipleura visible in dorsal view at basal third and apex. Surface of elytra with dense, rather smooth punctation and wrinkle almost vanishing on apical declivity.

Legs (Fig. 10 E – J View Figure 10 ). Femora and tibiae moderately thickened. Ratio of length (width) of pro-, meso-, and metatibiae: 46.8 (6.5): 64.6 (7.5): 94.1 (8.0). Protibiae straight with shorter spur, inner surface of protibiae slightly widen in basal 1 / 3; mesotibiae slightly arcuately curved; metatibiae arcuately curved, narrow. Ventral surface of protarsomeres I – III with hairy brush; ventral surface of mesotarsomere I – III with hairy brush. Ratio of length (width) of metatarsomeres I – IV segments: 27.5 (9.9): 25.0 (9.1): 17.5 (8.6): 37.5 (9.3).

Abdomen. Abdominal ventrites rather sparsely covered with minute, pale, recumbent setae.

Aedeagus (Fig. 10 K – O View Figure 10 ). Length of aedeagus 2.77 mm, width 0.53 mm; length of parameres 0.88 mm, width 0.32 mm. Slightly curved to ventral side apically in lateral view. Parameres strongly elongate, widest at base, regularly narrowing towards apex; outer margins slightly curved to ventral side apically in lateral view. Spiculum gastrale as in Fig. 10 K View Figure 10 . Posterior margin of abdominal sternite VIII sinuate (Fig. 10 O View Figure 10 ).

Female (Fig. 11 A, B View Figure 11 , 12 D – F View Figure 12 ). Body larger and wider than male, length 12.1–12.5 mm, width 5.9–6.1 mm. Outer margin of head above base of antennae with widely, obtusely angled emargination, less sharp than in male. Antennae shorter than in male, not posteriorly reaching base of pronotum when posteriorly extended. Pronotum 1.45 times as wide as long, widest in middle, lateral margins subparallel from base to middle and narrowing toward anterior angles arcuately, sides of pronotum slightly convex; 1.72 times as wide as head; with very dense punctation. Elytra oval, more convex than male, 1.32 times as long as wide. Protibial spurs small, pointed at apex. Distal gonocoxite (Fig. 11 A View Figure 11 ) rounded apically, densely covered with setae; spiculum ventrale as in Fig. 11 B View Figure 11 .

Diagnosis.

This new species is morphologically similar to P. banbarica , but can be distinguished from it by the following male character states: ventral surface of mesotarsomeres I – III with hairy brush (ventral surface of mesotarsomeres I – II with hair brushes, mesotarsomere III with small hairy tuft in P. banbarica ); surface of elytra with fine punctures and irregular wrinkles (surface of elytra with dense, rather smooth punctation and wrinkle in P. banbarica ).

Etymology.

This species is named from the Latin adjective “ oblonga ”, in reference to its elongate aedeagus.

Distribution.

Lhari County, Xizang, China.