Rhodostrophia bicolor Warren, 1895

Cui, Le, Xue, Dayong & Jiang, Nan, 2019, Description of two new species of Rhodostrophia Hübner, 1823 from China (Lepidoptera, Geometridae), Zootaxa 4563 (2), pp. 337-353 : 340

Rhodostrophia bicolor Warren, 1895

Figs 5 , 18 , 29 , 40 , 50

Rhodostrophia bicolor Warren, 1895 , Novit. zool., 2: 98. Syntypes ♁, ♀, India: Kukli (NHM).

Diagnosis. R. bicolor , R. yunnanaria and R. similata share the following characters: the flagellum of the antennae is all dentate ventrally; the male hind tibia has three spurs; the wing pattern is similar. In the male genitalia, they are similar in the following characters: the uncus is concave centrally, with a pair of small lateral processes near the subapex; the gnathos is triangular with long and acute apex; the costa is separated from the valva terminally; the apex of the valva is forked, spinose and asymmetric, the right side forms a longer digitiform process along the ventral margin. In the female genitalia, they share the following characters: the ductus bursae is long and sclerotized except the central part; the signum is collar-shaped. However, the band of the medial line of the forewing is the widest in R. bicolor ; the postmedial line of the forewing is smooth in R. yunnanaria , but wavy in R. bicolor and R. similata . In the male genitalia, the apex of the costa in R. bicolor is more acute than R. yunnanaria and R. similata ; the right digitiform process of the valva in R. similata is the longer than R. bicolor and R. yunnanaria ; several teeth are present on the subapical part of the aedeagus in R. bicolor and R. yunnanaria , but they are absent in R. similata ; the male eighth sternite in R. similata is more strongly concave than R. bicolor and R. yunnanaria . In the female genitalia, the posterior half of the ductus bursae in R. similata is broader than R. bicolor and R. yunnanaria .

Material examined. CHINA: Tibet (IZCAS): 6 6, Zayü, Zhenkongqiao , 3820 m, 21–23.VIII.1973, coll. Huang Fusheng; 1♀, Zayü, Gualaqiao , 2300 m, 5.VII.1973, coll. Huang Fusheng; 1 6 12 ♀ , Zayü, Five kilometers of north Guyuxiang , 3418 m, 26.VIII.2014, coll. Liu Hong; 2♀ , Zayü, Zhuwagen, Sangjiu , 3580 m, 31.VIII.2014, coll. Liu Hong.

Distribution. China (Tibet), India.

Remarks. This species is added to the fauna of China for the first time. The wing patterns of R. bicolor have some intraspecific variations: the medial line is brown and accompanied by brown shade; the medial line is reddish with brown shade; the medial line is reddish with brown shade and the area outside the postmedial line is also reddish. All the variations occur at Zayü of Tibet and collected in late August.

Figures

FIGURES 1–15. Adults of Rhodostrophia. 1–2. R. jacularia; 1. Male, Mongolia, 2. Female, Inner Mongolia, China; 3. R. grumaria, male, Tibet, China; 4. R. serraginaria, male, Xinjiang, China; 5. R. bicolor, male, Tibet, China; 6. R. yunnanaria, male, Yunnan, China; 7. R. similata, male, Yunnan, China; 8. R. reisseri sp. nov., male, holotype, Yunnan, China; 9. R. bisinuata bisinuata, female, Yunnan, China; 10. R. stueningi sp. nov., male, holotype, Yunnan, China; 11. R. philolaches, male, Yunnan, China; 12. R. tristrigalis, male, Sichuan, China; 13. R. anchotera, male, Yunnan, China; 14. R. olivacea, male, Yunnan, China; 15. R. pelloniaria, male, Tibet, China. Scale bar = 1 cm.

FIGURES 16–24. Male genitalia of Rhodostrophia. 16. R. jacularia, Inner Mongolia, China; 17. R. serraginaria, Xinjiang, China; 18. R. bicolor, Tibet, China; 19. R. yunnanaria, Sichuan, China; 20. R. similata, Gansu, China; 21. R. reisseri sp. nov., paratype, Yunnan, China; 22. R. bisinuata bisinuata, Yunnan, China; 23. R. stueningi sp. nov., paratype, Yunnan, China; 24. R. philolaches, Qinghai, China. Scale bar = 1 mm.

FIGURES 25–37. Male genitalia of Rhodostrophia. 25. R. tristrigalis, Tibet, China; 26. R. pelloniaria, Tibet, China. FIGURES 27–37. Aedeagus of Rhodostrophia. 27. R. jacularia, Inner Mongolia, China; 28. R. serraginaria, Xinjiang, China; 29. R. bicolor, Tibet, China; 30. R. yunnanaria, Sichuan, China; 31. R. similata, Gansu, China; 32. R. reisseri sp. nov., paratype, Yunnan, China; 33. R. bisinuata bisinuata, Yunnan, China; 34. R. stueningi sp. nov., paratype, Yunnan, China, the black lines show the cornutus and the line of small spurs on the terminal part of the aedeagus; 35. R. philolaches, Qinghai, China. 36. R. tristrigalis, Tibet, China; 37. R. pelloniaria, Tibet, China. Scale bar = 1 mm.

FIGURES 38–43. Female genitalia of Rhodostrophia. 38. R. jacularia, Inner Mongolia, China; 39. R. serraginaria, Xinjiang, China; 40. R. bicolor, Tibet, China; 41. R. yunnanaria, Yunnan, China; 42. R. similata, Yunnan, China; 43. R. reisseri sp. nov., paratype, Yunnan, China. Scale bar = 1 mm.

FIGURES 48–58. Male eighth sternite of Rhodostrophia. 48. R. jacularia; 49. R. serraginaria; 50. R. bicolor; 51. R. yunnanaria; 52. R. similata; 53. R. reisseri sp. nov.; 54. R. bisinuata bisinuata; 55. R. stueningi sp. nov.; 56. R. philolaches; 57. R. tristrigalis; 58. R. pelloniaria. Scale bar = 1 mm.