Stenothemus harmandi

Yang, Yuxia, Su, Junyan & Yang, Xingke, 2014, Review of the Stenothemus harmandi species-group (Coleoptera, Cantharidae), with description of six new species from China, Zootaxa 3847 (2), pp. 203-220 : 204

Stenothemus harmandi species-group

Diagnosis. Antennae filiform and simple in both sexes. Pronotum with posterior angles acute, protruding ( Figs. 1‒2, 4‒8 ) or obtuse, subrounded ( Fig. 3 ). Aedeagus ( Figs. 21‒41 ): ventral process and dorsal plate of each paramere bent ventrally, arcuate in lateral view, ventral process more or less thickened terminally, dorsal plate narrowed apically. Female with abdominal tergite VIII ( Figs. 9‒10 ) curled ventrally on both sides, sternite VIII (Figs. 11‒20) distinctly narrowed posteriorly, presenting with a more or less sclerotized lobe behind the middle emargination of posterior margin.

Distribution. China, India, Nepal.

Remarks. All the species are almost of the same coloration, and are best distinguished from each other by the characters of body-size, pronotum, aedeagus and abdominal sternite VIII of the female.

Figures

FIGURES 1 ‒ 4. Male habitus, dorsal view: 1, 2. Stenothemus harmandi (Bourgeois, 1902) (1. Lecotype, 2. non-type from Nepal); 3. S. fugongensis sp. nov.; 4. S. distortirudis sp. nov. Scale bars: 2.0 mm.

FIGURES 5 ‒ 8. Male habitus, dorsal view: 5. Stenothemus parallelus sp. nov.; 6. S. septimus sp. nov.; 7. S. leishanensis sp. nov.; 8. S. laticollis sp. nov. Scale bars: 2.0 mm.

FIGURES 21 ‒ 23. Aedeagus of Stenothemus harmandi (Bourgeois, 1902) (21. ventral view; 22. dorsal view; 23. lateral view; 22 a, 23 a. apex of paramere: 22 a. dorsoapical view; 23 a. inner-lateral view). Scale bar: 1.0 mm.

FIGURES 24 ‒ 32. Aedeagus (24, 27, 30. ventral view; 25, 28, 31. dorsal view; 26, 29, 32. lateral view; 26 a. laterophyse, lateral view; 31 a. apex of paramere, dorsoapical view): 24 ‒ 26. Stenothemus fugongensis sp. nov.; 27 ‒ 29. S. distortirudis sp. nov.; 30 ‒ 32. S. parallelus sp. nov. Scale bars: 1.0 mm.

FIGURES 33 ‒ 41. Aedeagus (33, 36, 39. ventral view; 34, 37, 40. dorsal view; 35, 38, 41. lateral view; 38 a. apex of paramere, dorsolateral view): 33 ‒ 35. Stenothemus septimus sp. nov.; 36 ‒ 38. S. leishanensis sp. nov.; 39 ‒ 41. S. laticollis sp. nov. Scale bars: 1.0 mm.

FIGURES 9 ‒ 10. Abdominal tergite VIII and sternite VIII of female (9. in natural state; 10. in loose state after being softened in NaOH solution); 11 ‒ 20. abdominal sternite VIII of female, ventral view: 9 ‒ 11. Stenothemus harmandi (Bourgeois, 1902); 12. S. subnitidus Švihla, 2005; 13. S. holosericus Švihla, 2005; 14. S. orbiculatus Švihla, 2005; 15. S. fugongensis sp. nov.; 16. S. distortirudis sp. nov.; 17. S. parallelus sp. nov.; 18. S. septimus sp. nov.; 19. S. leishanensis sp. nov.; 20. S. laticollis sp. nov. Scale bars: 1.0 mm.