Stenothemus chinensis ( Wittmer, 1982 ) Yang & Yang & Liu, 2021

Yang, Yuxia, Ge, Shujuan, Yang, Xingke & Liu, Haoyu, 2021, Review of the species of Stenothemus from Southeast China (Coleoptera, Cantharidae), European Journal of Taxonomy 744, pp. 119-144 : 131-135

Stenothemus chinensis ( Wittmer, 1982) comb. nov.

Figs 1E‒F , 5G‒I , 7C , 8G

Athemellus chinensis Wittmer, 1982: 344 , fig. 1.

Leiothorax atrosanguineus Švihla, 2005: 104 , figs 72‒74. Syn. nov.

Lycocerus chinensis – Kazantsev & Brancucci 2007: 250.

Material examined

Holotype of Athemellus chinensis

CHINA • ♀; [h-p] “u //T’ ienmo-Shan// Musée Heude”, [h-p] “ 10. 6. 36 // O. PIEI, coll.”, [p] “P. // 489”, [h] “ Lycocerus // lineaticeps Pic // n. sp.”, [p] “HOLOTYUS”, [h]“198”, [h-p] “ Athemellus // chinensis //Wittmer.// det. W. Wittmer ”; MNHN.

Holotype of Leiothorax atrosanguineus

CHINA • ♂; [p] “ CHINA, 1000‒1300m // Shaanxi, Qinling mts ,// XUNYANGBA (6km // E), 23.v.‒13. vi.1998, // I. H. Marshal leg.”, [p] “ HOLOTYPUS // Leiothorax // atrosanguineus sp. nov. // V. Švihla det. 2005”; “ CANTHARIDAE //CANTH000036013”; NHMB.

Other material

CHINA – Fujian • 1 ♂; Chong’an, Xingcun, San’gang ; 740 m a.s.l.; 25 May 1960; Y.R. Zhang leg.; IZAS • 1 ♂; same collection data and collector as for preceding, 17 May 1960; IZAS . – Guangxi • 1 ♂; Wuming, Damingshan ; 1230‒1423 m a.s.l.; 20 May 2011; H.Y. Liu leg.; MHBU . – Hubei • 1 ♀; Xingshan, Longmenhe ; 1300 m a.s.l.; 21 Jun. 1993; R.Z. Huang leg.; IZAS • 1 ♀; same locality as for preceding; 1280 m a.s.l.; 23 Jun. 1993; W.Z. Li leg.; IZAS • 1 ♀; Shennongjia ; 19 Jul. 1980; P.Y. Yu leg.; IZAS • 1 ♀; Shennongjia, Hongping ; 1660 m a.s.l.; 16 Jul. 1981 Y.H. Han leg.; IZAS • 1 ♀; same locality and collector as for preceding; 19 Jul. 1981; IZAS • 1 ♀; same locality as for preceding; 6 Jun. 2018; P. Wang leg.; MHBU • 1 ♂, 1 ♀; Shennongjia, Hongping, Wenshui ; 1 Jun. 2018; P. Wang and L.M. Li leg.; MHBU • 1 ♂; Shennongjia, Jiuchong ; 711.9 m a.s.l.; 11–15 Jul. 2014; Y.B. Ba and S.Y. Tang leg.; MHBU • 1 ♀; Yichang, Dalaoling ; 6 May 2015; T.F. Qiu leg.; MHBU • 1 ♀; Zhuxi, Xiangba ; 1208 m a.s.l.; 5 Jul. 2017; Z.Z. Xia leg.; IZAS • 1 ♂; Shennongjia, Baozidong ; 23 May 2018; P. Wang leg.; MHBU • 1 ♂; Dongxi management zone ; 17 May 2019; P. Wang leg.; MHBU . – Jiangxi • 1 ♀; Shangrao, Sanqingshan ; 15–20 Apr. 2007; L. Shi leg.; SYSU . – Shaanxi • 1 ♀; Yangxian, Huayang, Yantoushang ; 1206 m a.s.l.; 107°31′6.9″ E, 33°38′29″ N, 27 Jun. 2017; H.Y. Liu leg.; IZAS . – Sichuan • 1 ♀; Emeishan, Jiulaodong ; 1800‒1900 m a.s.l.; 13 Jun. 1957; Y.C. Lu leg.; IZAS • 1 ♀; Emeishan ; 1600‒2100 m a.s.l.; 24 Jun. 1955; БУЩИк leg.; IZAS . – Yunnan • 1 ♂; Lushui, Yaojiaping ; 2500 m a.s.l.; 24 May 1981; S.Y. Wang leg.; IZAS • 1 ♀; Zhibenshan ; 2550 m a.s.l.; 22 Apr. 1981; S.Y. Wang leg.; IZAS . – Zhejiang • 1 ♂; Qingyuan, Baishanzu ; 1500 m a.s.l.; 18 May 1994; H. Wu leg.; IZAS • 1 ♀; same locality as for preceding; 800 m a.s.l.; 20 Apr. 1994; Y.Z. Xu leg.; IZAS • 2 ♂♂; same collection data as for preceding; leg. H. Wu; IZAS • 1 ♂; Tianmushan, Bingchuan Valley ; 7 Jun. 2011; H.T. Song leg.; MHBU • 1 ♀; Changhua, Jiufu ; 13 May 2017; Y.B. Ba and H.H. Guan leg.; MHBU • 1 ♂; “ T’ienmo-Shan , Musée Heude , 1936.VI.9; leg. O. Piel ”; IZAS • 2 ♂♂, 3 ♀♀; “ T’ienmo-Shan , Musée Heude , 1936.VI.10; leg. O. Piel ”; IZAS .

Supplementary description

MEASUREMENTS. Body length (both sexes): 7.0‒ 10.5 mm; width: 1.2‒2.3 mm.

Male ( Fig. 1F )

AEDEAGUS ( Fig. 5G‒I ). Moderately swollen laterally at basal part, contracted apically in diameter; basal piece nearly as long as dorsal plate of each paramere, with a moderately large, parallel-sided conjoint middle nodule at base of ventral side; ventral processes of parameres nearly parallel to each other, short and slightly narrowed apically, bent dorsally in lateral view; dorsal plate slightly shorter than ventral process, evenly narrowed apically, apex acute and bent to each other; apical part of laterophyses compressed and next to each other in middle, dorsolateral margin emarginate near apex, rounded and obviously exceeds middle emargination between dorsal plates.

Female ( Fig. 1E )

ABDOMINAL STERNITE VIII ( Fig. 8G ). Obliquely narrowed posteriorly, latero-apical angles obtusely rectangular, posterior margin deeply and triangularly emarginate in middle and feebly sinuate on both sides, behind notch with membrane which weakly sclerotised and rounded at apex.

INTERNAL ORGAN OF REPRODUCTIVE SYSTEM ( Fig. 7C ). Vagina stout, with median oviduct situated at ventroapical part, diverticulum and spermathecal duct arising from apex; diverticulum moderately long, about 0.12 times body length, evenly thinned apically, slender tube-shaped and spiral; spermathecal duct much shorter than diverticulum; spermatheca slender tube-shaped and spiral, obviously thinner than spermathecal duct and shorter than diverticulum, with basal part extended into short tube, where accessory gland opening. Accessory gland thin and much longer than spermatheca.

Remarks

Wittmer (1982), having only females at his disposal, assigned this species to the genus Athemellus Wittmer, 1972 , now a junior synonym of Lycocerus Gorham, 1889 ( Okushima 2005) . Some additional material, also including males from the type locality, is available here, and the morphological characters show that this species is a member of Stenothemus .

Furthermore, the holotype male of Leiothorax atrosanguineus shows that it has no differences from S. chinensis comb. nov.; also, a large series of additional material from several localities is available for examination though their type localities are far away. Therefore, L. atrosanguineus is considered to be a junior synonym of S. chinensis .

Distribution

China (Shaanxi, Zhejiang, Hubei, Fujian, Sichuan, Jiangxi, Yunnan, Guangxi).

Figures

Fig. 1. Habitus, dorsalview. A. Stenothemus biimpressiceps (Pic,1930) comb.nov., holotype, ♀ (MNHN), originally inCantharis Linnaeus, 1758. B. S. pallicolor (Wittmer, 1951) comb. nov., paratype, ♂ (NHMB, CANTH00001839), originally in PodabrinusFairmaire, 1896. C. S. limbatipennis (Pic, 1926) stat. rev. et comb. nov., ♂, specimen determined by W. Wittmer (NHMB), originally in Podabrus. D. S. nigriceps (Wittmer, 1955) comb. nov., holotype, ♂ (CAS, 7786), originally in Podabrinus. E. S. chinensis (Wittmer, 1982) comb. nov., holotype, ♀ (MNHN), originally in Athemellus. F. Leiothorax atrosanguineus Švihla, 2005 syn. nov. of S. chinensis, holotype, ♂ (NHMB, CANTH00003601).

Fig. 5. Aedeagus (A, D, G = ventral view; B, E, H = dorsal view; C, F, I = lateral view). A‒C. Stenothemus fukienensis Wittmer, 1974 (IZAS, IOZ(E)1659634). D‒F. S. kuatunensis Wittmer, 1979 (IZAS). G‒I. S. chinensis (Wittmer, 1982) comb. nov. (IZAS, IOZ(E)1436585). Scale bars: 1.0 mm.

Fig. 7. Female internal reproductive system, lateral view. A. Stenothemus flavus Y. Yang & X. Yang sp. nov. (IZAS, IOZ(E)1659887). B. S. fukienensis Wittmer, 1974 (IZAS). C. S. chinensis (Wittmer, 1982) comb. nov. (MHBU). Scale bars: 0.5 mm.

Fig. 8. Female abdominal sternite VIII, ventral view. A. Stenothemus biimpressiceps (Pic, 1930) comb. nov. (IZAS, IOZ(E)1435863). B. S. pallicolor (Wittmer, 1951) comb. nov. (SYSU, En-076948). C. S. limbatipennis (Pic, 1926) stat. rev. et comb. nov. (MHBU). D. S. nigriceps (Wittmer, 1955) comb. nov. (MHBU). E. S. flavus Y. Yang & X. Yang sp. nov. (IZAS, IOZ(E)1659887). F. S. fukienensis Wittmer, 1974 (IZAS). G. S. chinensis (Wittmer, 1982) comb. nov. (MHBU). Scale bars: 1.0 mm.