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The new species Carpelimus (s.str.) sichuanensis sp.n. is described from the Palaearctic region of China. РЕЗЮМЕ: Описывается новый вид Carpelimus (s.str.) sichuanensis sp.n. из палеарктической части Китая. The subgenus Carpelimus Leach, 1819 is a monophyletic group with a characteristic internal sac of the aedeagus that always bears strongly sclerotised tooth-like structures [Gildenkov, 2001a, b; 2003; 2007a, b]. This subgenus is one of the best known in the genus Carpelimus, and the discovery of a new species, especially in the Palaearctic region, is therefore of considerable interest. Forty five species and 3 non-nominative subspecies of the genus Carpelimus have so far been described from the Old World [Gildenkov, 2015b], of which 16 species from China and Taiwan [Gildenkov, 2015a, b; 2016]. For the Palaearctic part of China [Gildenkov, 2016], only 7 species Carpelimus (s.str.) are currently known: C. capillus Gildenkov, 2013; C. indicus (Kraatz, 1859); C. politus politus (Kiesenwetter, 1844); C. praelongus (Bernhauer, 1938); C. pusillus (Gravenhorst, 1802); C. tener (Bernhauer, 1902); C. vagus (Sharp, 1889). Of those, only 4 species (C. indicus, C. politus politus, C. pusillus, and C. tener) have so far been reported from Sichuan province, from which the new species is described and which is regarded here as part of the Palaearctic region [Gildenkov, 2015a; 2016]. This paper is based on the specimens deposited in the following collections: cGR — private collection of Guillaume de Rougemont (Oxford, Great Britain); cMG — private collection of M. Gildenkov (Smolensk, Russia). In the present study, standard methods were used for the taxonomic research of insects; the preparations were made on an MBS-10 binocular microscope. The genital preparations were processed using 10% KOH and then fixed in euparal. In the descriptions and diagnoses giving the length to width ratio for the head, pronotum, and elytra, the following standard units were used: 7 standard units = 0.1 mm; thus, 1 standard unit constitutes about 0.0143 mm. Carpelimus (s.str.) sichuanensis Gildenkov, sp.n. Figs 1–2. MATERIAL. Holotype, # “CHINA X.1985 Sichuan: Leshan | G. de Rougemont” (cGR). Paratypes: 1$ “CHINA X.1985 Sichuan: Leshan | G. de Rougemont” (cGR); # “CHINA: N-Sichuan (Daba Shan), 65 km N Fengjie, river bank, 1000 m, 31°40 ́ N, 109°34 ́ E, leg. M. Schülke [C01-08]” “10.VII.2001, fine gravel bank (floating, treading) [C01-08]” (cMG). DESCRIPTION Male (holotype). Length 2.4 mm. Colouration brown, integument slightly shining. Head and abdomen black brown; pronotum and elytra dark brown with slight reddish tint, much paler than head and abdomen; legs yellowish brown; antennal base light brown, progressively darker to brown at apex. Body with short, light-coloured setae. Head transverse, with wide base, ratio of head length (from neck mid-length to anterior margin of clypeus) to its maximum width about 20:30. Neck constriction prominent. Eyes large, convex, occupying almost entire lateral side of head; temples almost indistinct, head widest across eyes (Fig 1). Head surface with delicate, fine and dense punctation. Diameter of punctures on vertex more than 5 times as small as that of eye facet. Punctures on front smaller and more densely set. Punctures on vertex separated by slightly less than their diameter, interspaces smooth and slightly shining. Antennae long. Antennal segment 1 elongate, cylindrical, more than twice as long as its maximum width; segment 2 conical, more than twice as long as its maximum width, much narrower and shorter than segment 1; segment 3 conical, more than twice as long as its maximum width, much narrower and shorter than segment 2; segments 4–7 similar, with lengths exceeding significantly maximum widths; segment 8 conical, about as long as wide; segments 9–10 slightly conical, about as long as wide, much more massive than segment 8; segment 11 massive, pointed apically, about 1.5 times as long as its maximum width; last 3 segments form loose club. Pronotum widened from base, with maximum width about 2/3 its length from base, then progressively narrowed. Lateral margin shallowly emarginate from base, broadly rounded from its maximum width (Fig. 1). Ratio of pronotum length to its maximum width about 27:33. Surface of pronotum with delicate, fine and dense punctation; punctures separated by distance equal to or slightly less than their diameter, interspaces smooth and slightly shining. Punctation similar to that on vertex. Base of pronotal disc with prominent, symmetrical, widely-crescent depressions. Central part of disc with shallower, oval depressions merging across midline to single butterfly-shaped depression (Fig. 1).

New species of the genus Carpelimus Leach, 1819 from Central China (Coleoptera: Staphylinidae: Oxytelinae)