Pterostichus ( Morphohaptoderus ) dentellus Facchini & Sciaky, 2003

[1] Pterostichus ( Morphohaptoderus) dentellus Facchini & Sciaky, 2003 View in CoL

Figs 1 H View Figure 1 , 2 A, D View Figure 2 , 3 A View Figure 3 , 5 A View Figure 5 , 6 View Figure 6 , 7 A, B View Figure 7 , 12 A – C View Figure 12

Pterostichus ( Morphohaptoderus) dentellus Facchini & Sciaky, 2003: 8 ( 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) dentellus n. sp., Det. Facchini & Sciaky 2000 ” [red label] ( CSF) . Paratypes: Hubei • 1 ♂, 1 ♀, the same data as holotype but labeled as paratype ( IZAS) .

Non-type material examined.

Hubei • 2 ♂, 1 ♀, labeled “ Hubei Province, Shennongjia, Jinhouling   GoogleMaps , 2500 m, pitfall trap, 2013. VIII. 15, Hao Huang leg. ” [in Chinese] ( CBFU) ; • 1 ♀, labeled “ Hubei Province, Shennongjia, Hongping Town, Wenshui Village   GoogleMaps , 1700 m, pitfall trap, 2013. VIII. 13, Hao Huang leg. ” [in Chinese] ( CBFU) ; • 1 ♂, 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] ( CBFU) GoogleMaps ; • 2 ♂, 5 ♀, 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 ; • 25 ♂, 26 ♀, labeled “ Hubei Province, Shennongjia, Yanziya , 2300 m, pitfall trap, 2013. VIII. 19, Hao Huang leg. ” [in Chinese] ( CBFU) ; • 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 “ Muyu , Shennongjia, Hubei Prov. 6. VIII. 2002, Li & Tang leg. ” ( IZAS) ; • 1 ♂, labeled “ Hubei, Shennongjia, Jiuhuping , 1800–1950 m, N 31.5085, E 110.3485, 2025. IV. 5, Yifan Wang lgt. ” ( CBFU) GoogleMaps ; • 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 ; Chongqing • 3 ♂, 1 ♀, labeled “ Chongqing, Chengkou County, Houping Town, Longpan Village, Damaping Zhongliangzi , Xiaodong Yang leg., 2009. V. 7, B 06 y 0166 // N 31 ° 42.353 ′, E 108 ° 58.147 ′, 2152 m, broadleaf forest, daytime in Quercus dead log ” [in Chinese] ( CBFU) GoogleMaps ; • 2 ♂, 1 ♀, labeled “ Chongqing, Chengkou County, Houping Town, Longpan Village, Guangtou Mountain, Deshengping , Xiaodong Yang leg., 2009. V. 8, B 09-10190 ” [in Chinese] ( CBFU) ; • 3 ♂, 3 ♀, 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 ; • 3 ♀, 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 .

Diagnosis.

Medium-large-sized species for the subgenus ( BL = 9.8–10.8 mm); elytral microsculpture linear in both sexes; antennomere 3 without accessory setae; pronotum distinctly constricted to base; basal foveae without or with relatively few punctures; intersulcate area strongly depressed; elytral interval 3 always with two setigerous pores, both adjacent to stria 2; umbilical pore series on ninth interval sparse in middle, composed of 15–17 pores (5–6, 2–3, 8–9); elytral humeral tooth small with sharp apex; fifth tarsomeres setose ventrally; male sternite VI with a small tubercle on middle of posterior margin. Median lobe of aedeagus slender, ventral surface without or with a very faint short ridge, basal portion and apical portion forming a right angle; left margin of the apical orifice with a wide triangle denticle; apical lamella short and wide, lamellar apex approximately two times length of lamellar denticle, forming angle with it. Gonocoxite 2 of female ovipositor crescent-shaped, obtuse apically, outer margin with three to five large ensiform setae, dorsal margin with two or three smaller ensiform setae, one nematiform seta located on the apical sixth of outer surface.

Comparisons.

This species is externally similar to other species with distinct lamellar denticles on male genitalia (the maximus group), but easily distinguishable within this species group. The males can be readily distinguished from other similar species from Hubei by the unique sexual character on sternite VI (Fig. 2 A, D View Figure 2 ) and females by elytra with linear microsculpture (Fig. 6 F View Figure 6 ).

Compared with related species from other provinces, P. dentellus is most similar to P. chungkingi Jedlička, 1932 and P. guizhouensis Sciaky, 1997 for the females without granular microsculpture, pronotum distinctly constricted to base and antennomere 3 without accessory setae. But it can be recognized from these species by the pronotum narrower and less punctate on basal fovea; median lobe of male genitalia much slenderer with larger apical lamella (Fig. 12 A – C View Figure 12 ); and the gonocoxite 2 of ovipositor with three or more ensiform setae on outer margin (Fig. 5 A View Figure 5 ).

Description.

This species is easily recognizable and has been sufficiently described by Facchini and Sciaky (2003). A redescription is unnecessary here, except for the following supplementary descriptions on the endophallus (Fig. 7 A, B View Figure 7 ): Endophallus helicon-shaped, extending to the apical direction of aedeagus, major parts of endophallus located on dorsal-left side of aedeagus; gonopore opened to lateral-basal direction of aedeagus; surface with fine scales, densest near gonopore; gonoporal piece small. Ventral side of endophallus compressed and pigmented, with a chitinized piece. Two distinct lobes recognized: left pre-apical lobe (lp) relatively large and rounded, close to base of apical lamella, decorated with fine scales, visible in both lateral views; left apical lobe (la) small and rounded, just before gonopore and close to apex of apical lamella, decorated with very fine scales.

Distribution.

This species is known from three distant localities: Shennongjia in Hubei and Chengkou and Wuxi in Chongqing, all distributed at relatively high altitudes of 1700–2500 m.