Pterostichus (Tschitscherinea) farkaci Sciaky 1997
Creators: name: Yin, Wen-Qi
name: Chen, Jia-Heng
name: Shi, Hong-Liang
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Pterostichus
Pterostichus farkaci

description: Pterostichus (Tschitscherinea) farkaci Sciaky, 1997
Figures 10–12, 22–24, 28–29, 41, 46
Chinese vernacular name: ĭĸdzā±Ƥ
Sciaky 1997: 167 (holotype in Collection of Jan Farkač, Prague, Czech Republic; type locality: Yunnan: West of Zhongdian, 27°49’N, 99°34’E).
Material examined. Paratype of P. farkaci Sciaky, 1 male (CRS, Fig. 12): “N Yunnan 22–24.VI.1994, 27.49N 99.34E 3800–4200m, mts. 15km W of ZHONGDIAN, lgt. J. Farkač & D. Král ”; “PARATYPUS Pterostichus (Tschitscherinea) farkaci n. sp., Det. Sciaky, 1995” [red label]. Non-type materials: 2 males and 1 female (IZAS): “ Zhongdian, Hongshan, 4300m, Chinese Academy of Science ”, “ 1981.VIII.10, Li Zhiying lgt.”; 4 males and 2 females (IZAS): “ CHINA, Yunnan Prov., Zhongdian, Tianchi Roadside near lake, 27.62555°N, 99.64237°E”, “ 3898m, 2007.7.22 day, Liang H.B. collector, Institute of Zoology, Chinese Acad. Science”; 1 female (IZAS): “ CHINA, Yunnan province, Zhongdian, Tianchi, 3700–3800m, 2004.VII.1, Li Xueyan collector, IOZ, Chinese Acad. Sci.”; 1 female (IZAS): “ CHINA, Yunnan province, Shangrila City, Tianchi lake, Picea forest, N27.6197, E99.6465, 3831m ”, “ 2018.VIII.5, under deadwood, Yu S.P., Yan W.F. & Zhu P.Z. lgt., BFU & IOZ expedition 2018.”; 34 males and 23 females (CBFU): “ Yunnan, Dêqên, Zhongdian County, Gezan village, West of Hongshan Pass, N28.12945, E99.89273, 4270, Rhododendra shrubs, pitfall trap, Shi H.L. leg., 2013.VIII.24 ”; 6 males and 6 females (CBFU): “ Yunnan, Dêqên, Zhongdian county, Tianchi, N27.6197, E99.6465, 3831m, 2018.VIII.5, Yan WF., Zhu PZ. & Jiang ZY., leg.”.
Diagnosis. This species is distinguishable among the subgenus by the combination of following characters: elytra with isodiametric microsculpture (Fig. 46); maxim width of head at outer margin of eyes; parascutellar pore usually absent (occasionally present on one or both sides); interval 3 with three setigerous pores; metatarsus slender, similar in both sexes (Fig. 41). The size of elytral humeral tooth is variable within this species. Some individuals of P. farkaci with very large humeral tooth are similar to P. krali, but the latter species is different in the elytral parascutellar pore present and elytra with transverse microsculpture (Fig. 47).
Supplementary description. BL = 10.2–10.8 mm, BW = 3.5–3.8 mm; eyes large, tempora slightly swollen behind eyes, shorter than eyes, eyL/tpL = 1.35–1.83, maxim width of head at outer margin of eyes, HW/PW = 0.64–0.69. Pronotum subquadrate, PW/PL = 1.23–1.27, PBW/PW = 0.77–0.80; anterior margin slightly narrower than posterior margin, PAW/PBW =0.86–0.89; lateral margins slightly curved near middle, hardly sinuate before posterior angles; posterior angles nearly rectangular, with faint denticle. Basal foveae with sporadic punctures and transverse wrinkles, inner and outer grooves both deep, intersulcate area depressed between them. Elytra with isodiametric microsculpture (Fig. 46); parascutellar pore usually absent, occasionally present on one or both sides; humerus tooth narrow and sharp, slightly to very strongly projected out; interval 3 with three setigerous pores, the first one placed near basal fourth, adjacent to stria 3, the other two adjacent to stria 2. Male sternite VII without secondary sexual modification; metatarsus slender, similar in both sexes (mt1 length/width = 3.1–3.5, Fig. 41); segments 1–2 with outer-lateral ridge. Median lobe of aedeagus stout (length about 1.35 mm), apex abruptly curved ventrally at apical fourth; apical lamella short and wide, apex rounded, slightly twisted to right; right paramere very long, falcate, strongly curved near middle, apex thickened (Figs 22–24). Endophallus extended to ventral side of aedeagus, gonopore opened to base of aedeagus, right apical lobe (ra) spherical and sclerotized atop, left apical lobe (la) slightly swollen and in similar shape as ra; with distinct scales near gonopore (Figs 28–29).
Remarks. The size of elytral humeral tooth is variable within this species. For specimens from Hongshan, the humeral tooth is always small and weakly projected (Fig. 11). In contrast, for those specimens from Tianchi, the humeral tooth is very strongly projected out (Fig. 10), similar to that in P. krali but slenderer in the apex of tooth. Whereas for specimens from Shika Snow mountain and adjacent mountains, the humeral tooth is variable. But the male genitalia are almost identical (Figs 22–24) between specimens with small and large humeral tooth. We examined the endophallus of specimens from Hongshan and Tianchi with different size of elytral humeral tooth, and found that their endophalli are almost identical (Figs 28–29).
Distribution. This species is known from Zhongdian (=Shangri-La city), Dêqên Tibetan Autonomous Prefecture, Yunnan province with three localities: Hongshan (Northeast to Zhongdian township), Shika Snow Mountain (West to Zhongdian township, type locality), and Tianchi (Southwest to Zhongdian township). (Fig. 54, green)
description: Published as part of Yin, Wen-Qi, Chen, Jia-Heng & Shi, Hong-Liang, 2024, Revision of the Chinese endemic subgenus Tschitscherinea Berg, with descriptions of three new species (Coleoptera, Carabidae), pp. 43-65 in Zootaxa 5481 (1) on pages 52-53, DOI: 10.11646/zootaxa.5481.1.3, http://zenodo.org/record/12742724