Pachynotus lampoglobus Chao & Y.-Q. Chen, 1980

Ren, Jinliang, Ren, Li & Zhang, Runzhi, 2024, Revision of the Chinese Pachynotus Kollar & L. Redtenbacher, 1844 (Coleoptera, Curculionidae), with descriptions of two new species, ZooKeys 1197, pp. 153-169 : 153

Pachynotus lampoglobus Chao & Y.-Q. Chen, 1980

Fig. 7

Material examined.

Holotype, ♂: (white, printed): 西藏普兰科加 [ Xīzàng Pǔlán Kējiā] / 3700公尺 [Gōng Chǐ] / 中国科学院 [ Zhōngguókēxúeyuàn] / 14. VII 1976 / 黄复生 [ Huáng Fùshēng]: IOZ(E)905056 // Paratype (1♂): same data as holotype except IOZ(E)905057 .

Redescription.

Holotype, male. Measurements (in mm): standard length: 5.60; pronotal length: 1.85; pronotal width: 2.10; elytral length: 3.70; elytral width: 3.00; rostral length: 1.10; rostral width: 1.00.

Habitus and colour (Fig. 7 ): body wide, ovate; blackish-reddish brown; antennae and legs reddish brown, with pale yellowish-brown scales with red-green metallic lustre; scales on dorsal and lateral surfaces of rostrum moderately dense, oval to elongate-oval; antennal scape and funicles without scales; pronotum with polygonal scales, moderately dense, not contiguous; scales on elytra polygonal, dense, but not contiguous; scales on ventrites moderately dense, polygonal to elongate-oval; scales on legs dense; dorsal of tarsi surface without scales; body with erect to suberect, short, sparse setae; rostrum sparsely covered with suberect, fine, short setae; antennal scape and desmomeres I-VII with long, fine, sparse setae; dorsal and lateral surfaces of pronotum with sparse, suberect setae; setae on interstriae short, erect to suberect, equal to 2 × diameter of scale; setae on the ventral surface moderately long, fine, erect.

Head: convex; dorsal surface smooth; punctures small and dense; eyes moderately convex, oval; forehead convex, moderately elevated than base of rostrum in lateral view.

Rostrum: in dorsal view, 1.10 × as long as wide; sides narrowed from base to apex; apex narrower than base; dorsal surface with a broad and deep median sulcus, reaching middle of forehead; posterior angle of epistome more than 90°, smooth; mandibular scars oval; ventral margin of antennal scrobes visible at apical two-thirds in dorsal view; in lateral view, without triangular depression positioned laterally between eyes and antennal scrobes; prementum with four setae.

Antennae: scape slender, clavate, reaching middle of eyes at rest, 0.88 × length of funicle; desmomere I 1.30 × length of II, both segments elongate clavate; desmomere III short, clavate, 0.47 × length of II; desmomere IV 0.88 × length of III, nearly equal width; desmomeres IV-VI moniliform, equal in length and width; desmomere VII moniliform, 1.09 × length, 1.06 × width of VI; club elongate-oval, apical sharp, three-segmented, uniformly pubescent, segment I 1.35 × length of II; segment II shorter than segment III.

Pronotum: 0.88 × as long as wide; subquadrate in dorsal outline, strongly convex; sides strongly rounded, greatest width at midpoint, gradually narrowing towards both ends, fore margin shorter than posterior one; median sulcus, fine, extremely shallow; dorsal surface of pronotum smooth, punctures small, each puncture covered by a scale; postocular lobes absent, vibrissae fine, dense, yellow.

Scutellum: large and distinct, U-shaped, shiny, uncoated, reddish brown.

Elytra: 1.23 × as long as wide, moderately convex, elongate-oval; base not raised as prominent flange, not bisinuate; sides subparallel before declivity, only slightly narrowed near the base; striae distinct, narrow, moderately deep, linear; punctures minute, spot-like, moderately dense, spaces between punctures narrower than diameter of punctures; interstriae wide, flat, without tubercles, odd interstriae not more raised than even ones.

Abdomen: sternite I depressed in middle, slightly convex at sides; suture between sternite I and II slightly bisinuate; sternite II slightly convex; sternite I longer than II, sternite II slightly shorter than III and IV combined; sternites III and IV equal in length; sternite V moderately convex, apical round, shorter than sternites III and IV combined.

Legs: slightly short; femora clavate, densely with scales; fore tibiae bent inward at apical half, apex projected inwards and outwards; inner margin of fore tibiae with several moderately large teeth; median- and hind tibiae with moderately small teeth; corbels of hind tibiae closed.

Variation.

Male paratype. Measurements (in mm): standard length: 6.10; pronotal length: 1.90; pronotal width: 2.20; elytral length: 3.80; elytral width: 3.10; rostral length: 1.10; rostral width: 0.90.

Female. Unknown.

Distribution.

China (Xizang).

Figures

Figure 7. Habitus of Pachynotus lampoglobus, holotype. A dorsal view B lateral view C specimen label. Scale bars: 1 mm.