Stenothemus dundai Švihla, 2004

Yang, Yuxia, Ge, Shujuan, Yang, Xingke & Liu, Haoyu, 2021, Taxonomic revision of the species of Stenothemus from Southwest China (Coleoptera, Cantharidae), with the descriptions of five new species, European Journal of Taxonomy 757 (1), pp. 1-36 : 11

Stenothemus dundai Švihla, 2004

Figs 1E , 3D , 4D

Stenothemus dundai Švihla, 2004: 199 , figs 153‒154, 212.

Material examined

Holotype

CHINA • ♂; [p] “CHINA-SICHUAN pr. // KANGDING distr. 16‒19.7. // MUGEZO lake 4500 m // R. DUNDA lgt. 1992”, “HOLOTYPUS // Stenothemus // dundai sp. n. // V. Švihla det. 2003”; NMPC.

Additional material

CHINA ‒ Gansu • 1 ♂, 2 ♀♀; Wenxian, Qiujiaba, Shiyaziliang ; 3200‒3400 m a.s.l.; 30 Jun. 1998; J. Yao leg.; IZAS • 1 ♂; same collection data as for preceding; J. Chen leg.; IZAS . ‒ Qinghai • 1 ♂; Yushu, Gelong ; 3700 m a.s.l.; 10 Jul. 1964; S.Y. Wang leg.; IZAS • 2 ♂♂; Yushu, Gelong ; 4200 m a.s.l.; 13 Jul. 1964; S.Y. Wang leg.; IZAS . ‒ Shaanxi • 2 ♀♀; Liuba, Dahongqu ; 2500 m a.s.l.; 20 Jul. 1998; J. Chen leg.; IZAS . ‒ Sichuan • 1 ♀; N Jiulong; 3735 m a.s.l.; 8‒14 Jul. 2001; X.D. Yu and H.Z. Zhou leg.; IZAS • 2 ♂♂, 1 ♀; N Jiulong, Lengshan Forest ; 3825 m a.s.l.; 11‒14 Jul. 2001; X.D. Yu and H.Z. Zhou leg.; IZAS • 1 ♂; same collection data as for preceding; IZAS • 7 ♂♂; Luhuo ; 11‒20 Aug. 2006; F.M. Shi leg.; MHBU • 1 ♂, 1 ♀; Jiangyuan, Shuajingsi ; 27‒28 Jul. 2009; Z.H. Gao and Y.P. Niu leg.; MHBU • 1 ♂; Maerkang-Daoping ; 3230 m a.s.l.; 12 Jul. 1961; G.F. Li leg.; IZAS . ‒ Xizang • 1 ♂; Zhikang, Qoidȇn ; 4100 m a.s.l.; 15‒16 Jul. 2008; G.D. Ren leg.; MHBU . ‒ Yunnan • 2 ♂♂; Xiaozhongdian ; 3800 m a.s.l.; 1 Aug. 1984; S.Y. Wang leg.; IZAS .

Descriptive notes

Body length (both sexes): 5.5‒7.0 mm; width: 1.1‒1.5 mm.

Female

ABDOMINAL STERNITE VIII ( Fig. 3D ). Obliquely narrowed posteriorly, lateroapical angles widely triangular, posterior margin nearly straight and feebly emarginate in middle.

INTERNAL ORGAN OF REPRODUCTIVE SYSTEM ( Fig. 4D ). Vagina elongate, with median oviduct situated at ventroapical part, vagina abruptly narrowed in apical part and extended into a short duct which diverticulum and spermathecal duct are arising from; diverticulum relatively short, about 0.36 times adult body length, evenly thinned apically, slender tube-shaped and spiral; spermathecal duct slightly long but much shorter than diverticulum; spermatheca slender tube-shaped and spiral, obviously thinner than spermathecal duct and much longer than diverticulum, with basal part extended into a short tube, where accessory gland opens. Accessory gland thin and slightly shorter than spermatheca.

Distribution

China (Gansu, Qinghai, Shaanxi, Sichuan, Yunnan, Xizang). New records for Qinghai, Shaanxi, Yunnan.

Remarks

The female reproductive system is illustrated and described for the first time.

Figures

Fig. 1. Habitus, dorsal view.A. Stenothemus benesiŠvihla, 2004, holotype, ♂ (NMPC). B. S. shaanxiensis Švihla, 2004 stat. nov., holotype, ♂ (NMPC). C. S. davidi (Pic, 1926) comb. nov., holotype, ♀ (MNHN). D. S. diffusus Wittmer, 1974, paratype, ♂ (NHMB CANTH00003518). E. S. dundai Švihla, 2004. holotype, ♂ (NMPC). F. S. grahami Wittmer, 1974, paratype, ♂ (NHMB CANTH00003898). Scale bars = 1.0 mm.

Fig. 3. Abdominal sternite VIII of female, ventral view. A. Stenothemus shaanxiensis Švihla, 2004 stat. nov. (IZAS, Shaanxi). B. S. davidi (Pic, 1926) comb. nov. (IZAS, Shaanxi). C. S. diffusus Wittmer, 1974 (MHBU, Sichuan). D. S. dundai Švihla, 2004 (MHBU, Sichuan). E. S. grahami Wittmer, 1974 (IZAS, Gansu). F. S. jindrai Švihla, 2004 (IZAS, Sichuan). Scale bars = 1.0 mm.

Fig. 4. Female reproductive system, ventral view. A. Stenothemus shaanxiensis Švihla, 2004 stat. nov. (IZAS, Shaanxi). B. S. davidi (Pic, 1926) comb. nov. (IZAS, Shaanxi). C. S. diffusus Wittmer, 1974 (MHBU, Sichuan). D. S. dundai Švihla, 2004 (MHBU, Sichuan). Abbreviations: see Material and methods. Scale bars = 0.5 mm.