Pterostichus ( Morphohaptoderus ) shennongjianus Facchini & Sciaky, 2003

[3] Pterostichus ( Morphohaptoderus) shennongjianus Facchini & Sciaky, 2003 View in CoL

Figs 1 I View Figure 1 , 1 G View Figure 1 , 2 C View Figure 2 , 3 C View Figure 3 , 5 B View Figure 5 , 9 View Figure 9 , 10 View Figure 10 , 11 A, B View Figure 11 , 13 F – J View Figure 13

Pterostichus ( Morphohaptoderus) shennongjianus Facchini & Sciaky, 2003: 10, ( holotype in CSF; type locality: Hubei: Shennongjia). View in CoL

Type examined.

Holotype: Hubei • ♂, labeled “ CHINA, W Hubei, Shennongjia Forest , reg. 2000 m 8.6. 95 // HOLOTYPE, Pterostichus ( Morphohaptoderus) shennongjianus n. sp., Det. Facchini & Sciaky 2000 ” [red label] ( CSF) .

Non-type material examined.

Hubei • 4 ♂, 3 ♀, labeled “ Hubei Province, Shennongjia, Shennongding Scenic Area Entrance , 1884 m, pitfall trap, N 31.5059, E 110.3346, 2022. VII. 29, Hongliang Shi & Ganyan Yang leg. ” [in Chinese] ( IZAS) GoogleMaps ; • 4 ♂, 8 ♀, labeled “ Hubei Province, Shennongjia, Jinhouling , 2500 m, pitfall trap, 2013. VIII. 15, Hao Huang leg. ” [in Chinese] ( IZAS) ; • 2 ♂, labeled “ Hubei Province, Shennongjia, Hongping Town, Yixiantian , 1500 m, pitfall trap, 2013. VIII. 15, Hao Huang leg. ” [in Chinese] ( CBFU) ; • 1 ♀, labeled “ Hubei Province, Shennongjia, Hongping Town, Wenshui Village , 1700 m, pitfall trap, 2013. VIII. 13, Hao Huang leg. ” [in Chinese] ( CBFU) ; • 1 ♂, 2 ♀, labeled “ Hubei Province, Shennongjia, Shennongding, Jinhouling Crossroad , 2200 m, pitfall trap, N 31.4755, E 110.3066, 2022. VII. 29, Hongliang Shi & Ganyan Yang leg. ” [in Chinese] ( CBFU) GoogleMaps ; • 1 ♂, labeled “ Hubei Province, Shennongjia, Yanziya , 2300 m, pitfall trap, 2013. VIII. 19, Hao Huang leg. ” [in Chinese] ( CBFU) ; • 3 ♂, 1 ♀, labeled “ Hubei Province, Shennongjia Forestry District, Hongping Town , N 31.4739, E 110.3003, 2500 m, 2020. VIII. 1–10, Jialin Tian leg., pitfall trap ” [in Chinese] ( CBFU) GoogleMaps ; • 1 ♂, labeled “ Hubei, Shennongjia, Badongya , 2700 m, 1980. VII. 23, Peiyu Yu leg. ” [in Chinese] ( IZAS) ; • 1 ♂, labeled “ Xiaolongtan , Shennongjia, Hubei prov. 5. VIII. 2002, Li & Tang leg. ” ( IZAS) ; • 3 ♂, 1 ♀, labeled “ China, W Hubei, 20. V. – 7. VI., DASHENNONGJIA mts. , 31.5 N 110.3 E, 2700 m, Jaroslav Turna leg., 2005 ” ( CRS) GoogleMaps ; • 2 ♂, labeled “ China, W Hubei, 21. VI. – 13. VII., GUANMENSHAN 1500 m, pitfall traps, 31.45 N 110.4 E, Jaroslav Turna leg., 2003 ” ( CRS) GoogleMaps ; Sichuan • 1 ♂, labeled “ Sichuan, Wushan, Liziping , 1850 m, 1994. V. 18, Wenzhu Li leg. ” [in Chinese] ( IZAS) ; • 1 ♂, labeled “ Sichuan, Bazhong, Nanjiang, Guangwushan Town, Micang Mountain, Rhododendron Sea of Clouds Scenic Spot // N 32.7135, E 106.9912, 2183 m, 2024. VI. 26–28, Yuzhou Huang lgt. ” ( CBFU) GoogleMaps ; Chongqing • 1 ♂, labeled “ Chongqing, Chengkou County, Houping, Longpan Village, Guangtou Mountain, Deshengping , Xiaodong Yang leg., 2009. V. 8 B 09–10190 ” [in Chinese] ( IZAS) ; • 1 ♀, labeled “ Chongqing, Wuxi, Yintiaoling, Guanshan Forest Centre, Shizhuzi , 2137 m, N 31.53750, E 109.69711 // Fagaceae forest, 2024. VIII. 11, Jiaheng Chen & Luyu Wang lgt. ” ( CBFU) GoogleMaps ; • 1 ♂, labeled “ Chongqing, Wuxi County, Yintiaoling, Guanshan Forest Centre, Shizhuzi , 2137 m, N 31.53750, E 109.69711 // Fagaceae forest, pitfall trap, 2024. VIII. 11–15, Jiaheng Chen lgt. ” ( CBFU) GoogleMaps ; • 2 ♀, labeled “ Chongqing, Wuxi County, Yintiaoling Nature Reserve, Jieguping , 1620 m, N 31.48512, E 109.90803 // meadow hardwoods forest, pitfall trap, 2024. VIII. 14–15, Jiaheng Chen & Yihang Li lgt. ” ( CBFU) GoogleMaps ; • 6 ♂, 2 ♀, labeled “ Chongqing, Yintiaoling, Zhuanping Guard Station to main peak , 2021 m – 2200 m, N 31.49925, E 109.94965 // mixed forest, pitfall trap, 2024. VIII. 14–15, Jiaheng Chen & Yihang Li lgt. ” ( CBFU) GoogleMaps ; • 4 ♀, labeled “ Chongqing, Wuxi County, Yintiaoling, Zhuanping, Sanchahe , 1744 m, N 31.495367, E 109.92207 // hardwoods forest, pitfall trap, 2024. VIII. 14–15, Jiaheng Chen & Yihang Li lgt. ” ( CBFU) GoogleMaps .

Diagnosis.

Medium- to large-sized species for the subgenus ( BL = 8.7–12.1 mm); elytral microsculpture linear in males, granular in females; antennomere 3 without accessory seta; pronotum relatively wide and slightly narrowed to base; pronotal basal foveae densely punctate; area between lateral channel and outer sulcus distinctly ridged, usually without puncture; lateral channels finely punctate at most on posterior half; elytral interval 3 usually with three or more setigerous pores, all adjacent to stria 2; fifth tarsomeres setose ventrally; male sternite VII very faintly depressed, without wrinkles. Median lobe of aedeagus shortly ridged on left margin of ventral surface; lamellar denticle nearly as long as lamellar apex. Gonocoxite 2 of ovipositor straight, dorsal margin ridged except for basal fifth, outer margin with two or three minute ensiform setae.

Comparisons.

There are some other sympatric species very similar to the present species. Compared with them, the following characters are exclusive to P. shennongjianus : elytral interval 3 usually with three or more setigerous pores; male sternite VII very faintly and symmetrically depressed (Fig. 2 C View Figure 2 ); ventral surface of median lobe with a short straight ridge along left margin (Fig. 10 C View Figure 10 ); gonocoxite 2 of ovipositor straight, with very minute ensiform setae on outer margin (Fig. 5 B View Figure 5 ), length of the largest ensiform setae about 0.02 mm. Detailed comparisons have been provided under the descriptions of these related new species: P. quyuani sp. nov., P. lisao sp. nov., P. lingjun sp. nov., and P. wangshu sp. nov.

Description.

BL = 8.7–14.0 mm, BW = 3.4–5.6 mm; dorsal surface dark brown to black, appendages brown; elytral microsculpture linear in males, granular in females (Fig. 10 F, G View Figure 10 ).

Head slightly thickened, HW / PW = 0.58–0.60; frons without puncture; frontal sulci short and shallow; antennae reaching elytral basal sixth, antennomere 3 without accessory seta; eyes large and hemispherical, tempora very shortly swollen behind eyes; submentum with one seta on each side.

Pronotum rounded-rectangular, wider than length, PW / PL = 1.30–1.48, widest usually slightly before middle, PBW / PW = 0.73–0.77. Anterior margin concaved at middle, slightly narrower than posterior margin, PAW / PBW = 0.80–0.85; anterior angles broadly rounded, weakly projecting; lateral margins evenly arched, gently narrowed toward base, without sinuation before posterior angles; posterior angles right-angled, usually with a faint denticle weakly projecting out. Basal foveae (Fig. 3 C View Figure 3 ) densely punctate along inner and outer sulci, as well as on intersulcate area; inner and outer sulci both with well-defined boundaries; inner sulcus straight and a little oblique; outer sulcus shallower, about half length of inner one; intersulcate area slightly convex; lateral channels relatively narrow, without or with fine punctures at most between the mid-lateral seta and a distance from posterior angles; area between lateral margin and outer sulcus distinctly ridged, usually without puncture. Pronotal disc usually with very faint transverse wrinkles aside median line; median line shallow; basal median area with punctures, usually aggregated near inner sulcus.

Elytra broad and flat, lateral sides slightly expanded behind middle, BW / EL = 0.67–0.72. elytral basal border nearly straight, usually distinctly curved anteriorly near shoulder, forming an obtuse angle with lateral margin, humeral tooth small, apex faintly pointed; striae without punctures; parascutellar striole joined to apical portion of stria 1, angular base of stria 1 usually short with free apex (Fig. 3 C View Figure 3 ). Parascutellar pore present; setigerous pores on elytral interval 3 variable, usually three or four, sometimes five or occasionally two (among the examined 51 specimens, one specimen with two pores on left elytron, another one with two pores on both elytra), all pores usually adjacent to stria 2, sometimes (5 of 51 examined specimens) one middle or posterior pore may placed on the middle of interval or adjacent to stria 3, but the basal-most pore always adjacent to stria 2; umbilical pore series on ninth interval sparse in middle, composed of 16–18 pores (5–6, 2–3, 8–9).

Fifth tarsomeres with 3–4 (usually 3) pairs of setae ventrally.

Male sternite VII very faintly depressed at middle, with strong isodiametric microsculpture on center of the depression, gradually turned to shallower and transverse microsculpture to lateral regions; apex of sternite rounded (Fig. 2 C View Figure 2 ).

Median lobe of aedeagus relatively slender in compare to similar species; in lateral view, basal portion distinctly bent at basal fourth of median lobe, forming an angle of about 120 ° to apical portion (Fig. 10 B View Figure 10 ); ventral margin nearly straight before apical lamella, apex distinctly bent ventrally; apical orifice large, strongly turned to left side. Ventral surface with one straight ridge before apical orifice (Fig. 10 C View Figure 10 ): right ridge absent at base, very sharply indicated distal to midpoint of apical orifice; middle ridge at most very faintly displayed near base; left ridge straight and distinct, absent near base. Apical lamella thick and short (Fig. 10 A View Figure 10 ); rounded in dorsal view, apex widely rounded, slightly twisted to left (Fig. 10 D View Figure 10 ); with large lamellar denticle near base of left margin; in lateral view, lamellar base very short, lamellar denticle approximately equal to the length of lamellar apex ( laL / ldL = 1.00–1.10). Right paramere short, apex rounded (Fig. 10 E View Figure 10 ).

Endophallus (Fig. 11 A, B View Figure 11 ) bent to ventral side across left margin of aedeagus, major parts of endophallus located on left-ventral side of aedeagus; gonopore opened to left-apical direction of aedeagus; surface with coarse scales on expanded lobes, densest near gonopore; gonoporal piece large, falciform. Four distinct lobes recognized: basal lobe (bl) small and digital, protruding towards the ventral side of aedeagus, membranous without decoration; left pre-apical lobe (lp) relatively small and digital, decorated with distinctly coarse scales near apex, visible in right lateral view; left apical lobe (la) large, on left surface of endophallus, close to bl, with a chitinized piece between it and ra, decorated with dense and coarse scales; right apical lobe (ra) ovoid, adjacent to apical lamella and lp, decorated with fine scales.

Gonocoxite 2 of ovipositor with a peculiar form: elongate and straight, slightly bent outwardly, apex obtuse; outer margin with two or three minute ensiform setae close to base, length of the largest ensiform seta ca. 0.02 mm; dorsal margin without or with an ensiform seta very close to base, strongly ridged except for basal fifth (Fig. 5 B View Figure 5 ), one nematiform seta located on the apical eighth of outer surface.

Distribution.

This species is known from three distant localities: Shennongjia of Hubei Province; Chengkou County, Wuxi County, and Wushan County of Chongqing Municipality; and Bazhong City of Sichuan Province. It inhabits mid- to high-altitude areas ranging from 1500 to 2700 m. In the original description, this species was also recorded from Zhenping County, Shaanxi Province, about 100 km northwest of Shennongjia. However, due to the occurrence of some related species that are very difficult to distinguish, this record requires verification.