Pseudognaptorina reni X.-M. Li, 2025

Li, Xiu-Min, Zhang, Bao-Yue, Li, Ji-Gang & Pan, Zhao, 2025, Systematic review of the genus Pseudognaptorina Kaszab, 1977 (Coleoptera, Tenebrionidae, Blaptinae, Blaptini) from the Qinghai-Xizang Plateau, with description of six new species, ZooKeys 1234, pp. 19-46 : 19-46

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

Type materials.

Holotype: China • ♂ ( MHBU HBU (E) 339930 ): Vajra Mountain pass , Zadowa County, Qinghai / 32°47.98'N, 95°09.26'E / Alt. 4718 m / 2019-VII-26 / Guo-Dong Ren & Yi-Ping Niu leg. Paratypes: China • 10 ♂♂, 20 ♀♀ ( MHBU HBU (E) 339931 –339960): same data as holotype ; China • 3 ♂♂, 10 ♀♀ ( MHBU HBU (E) 339961 –339973): Konge township , Bachen County, Xizang / 32°31.50'N, 94°43.31'E / Alt. 4556 m / 2022-VII-4 / Guo-Dong Ren & Yi-Ping Niu leg.

Description.

Male (Figs 15 , 16 A – C ). Body length 13.6–14.1 mm, width 6.30–6.58 mm; black, slightly shiny, oval-oblong.

Head (Fig. 15 A, B ). 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. 15 D ) slender and long, reaching pronotal base when posteriorly extended, antennomere III very long, 2.7 times as long as antennomere II, antennomeres VIII – X oval, XI spindle-shaped. Length (width) ratio of antennomeres II – XI as follows: 12.5 (10.0): 33.4 (10.0): 16.6 (10.0): 15.7 (10.0): 14.8 (10.0): 16.4 (10.0): 14.1 (12.9): 14.1 (14.1): 14.1 (14.7): 18.8 (15.5).

Prothorax. Pronotum (Fig. 15 C ) transverse, 1.50 times as wide as long, widest in middle, 1.72 times as wide as head. Ratio of width on anterior margin to its maximum width and posterior margin 0.54: 1.00: 0.95. 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 slightly convex between lateral margins, very narrowly flattened along lateral margins from base nearly to anterior angles, covered with fine, 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, 1.43–1.48 times as long as wide, 1.39–1.41 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 wrinkles almost vanishing on apical declivity.

Legs (Fig. 15 E – J ). Femora and tibiae moderately thickened. Ratio of length (width) of pro-, meso-, and metatibiae: 56.0 (8.6): 49.6 (7.6): 68.0 (8.6). Protibiae straight with shorter spur, inner surface of protibiae slightly widened at basal third; mesotibiae slightly arcuately curved; metatibiae curved, narrow. Ventral surface of protarsomeres I – III with hairy brush; ventral surface of mesotarsomeres I – II with hairy brush. Ratio of length (width) of metatarsomeres I – IV: 38.7 (11.5): 21.1 (10.0): 19.6 (10.0): 31.1 (10.0).

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

Aedeagus (Fig. 15 K – O ). Length of aedeagus 2.31 mm, width 0.51 mm; length of parameres 0.76 mm, width 0.33 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. 15 K . Posterior margin of abdominal sternite VIII sinuate (Fig. 15 O ).

Female (Figs 16 A, B , 17 D – F ). Body larger and wider than male, length 14.1–15.0 mm, width 7.0– 7.7 mm. Antennae shorter than in male, reaching base of pronotum when posteriorly extended. Pronotum 1.56 times as wide as long, widest in middle, lateral margins subparallel from base to middle and arcuately narrowing toward anterior angles, sides of pronotum slightly convex; 1.83 times as wide as head, with very dense punctation. Elytra oval, more convex than in male, 1.37 times as long as wide. Protibial spurs small, pointed at apex. Distal gonocoxite (Fig. 16 A ) rounded apically, densely covered with setae; spiculum ventrale as in Fig. 16 B .

Diagnosis.

This new species is morphologically similar to P. exsertogena , but can be distinguished from it by the following male character states: pronotum 1.50 times as wide as long (pronotum 1.28 times as wide as long in P. exsertogena ); surface of elytra with fine punctures and without regular wrinkles (surface of elytra with fine punctures and irregular wrinkles in P. exsertogena ).

Etymology.

This species is named after Prof. Guo-Dong Ren, in recognition to his contributions in collecting specimens of Pseudognaptorina .

Distribution.

Zadowa and Bachen Counties, Xizang, China.

Figures

Figure 15. Pseudognaptorina reni X. - M. Li, sp. nov., male A head, dorsal view B head, ventral view C pronotum D antenna E protibia F mesotibia G metatibia H protarsus I mesotarsus J metatarsus K spiculum gastrale L – N aedeagus L dorsal view M lateral view N ventral view O abdominal sternite VIII. Scale bars: 0.5 mm.

Figure 16. Pseudognaptorina reni X. - M. Li, sp. nov., female. A ovipositor B spiculum ventrale. Scale bars: 0.5 mm.

Figure 17. Habitus of Pseudognaptorina reni X. - M. Li, sp. nov. A – C male, holotype D – F female, paratype A, D dorsal views B, E lateral views C, F ventral views. Scale bar: 2.0 mm.