Nygmia uniformis ( Moore, 1879 )

Wang, Houshuai, Wang, Min & Fan, Xiaoling, 2011, Notes on the tribe Nygmiini (Lepidoptera: Erebidae: Lymantriinae) from Nanling National Nature Reserve, with description of a new species, Zootaxa 2887, pp. 57-68 : 63

Nygmia uniformis ( Moore, 1879)

( Figs. 15–16 , 35 , 47 )

Chaerotricha uniformis Moore, 1879: 49 .

Nygmia uniformis: Kirby, 1892: 449 .

Euproctis uniformis: Hampson, 1892: 483 ; Kishida, 1993: 85; Chao, 2003: 350.

Diagnosis. Forewing length 19–29 mm. Forewing brown, with scattered black scales, fringes yellow; hindwing dark at basal half, yellow at apical half. Male genitalia ( Fig. 35 ): Uncus broad basally, hooked apically; valva deeply bifid, dorsal part broader, somewhat rectangular, ventral part small, acute at apex; aedeagus with a L-shaped spur medially and a patch of spines in vesica. Female genitalia ( Fig. 47 ): The eighth segment narrow; ostium relatively large; ductus long, sclerotized at base; signum with a longitudinal flange medially.

Material examined. 2Ƥ, Nanling National Nature Reserve, Guangdong, 25.III.2005. 13, same locality, 28.IV.2009.

Distribution. China (Guangdong, Yunnan, Hainan), India, Nepal.

Remarks. The species is close to Nygmia poppaea Collenette and N. venata Collenette illustrated by Holloway (1999) in male genitalia characters, but it can be easily differentiated from the latter two by the forewing lacking the broken black fasciae and male genitalia with a smaller aedeagus vesica. It can also be separated from N. poppaea by the shorter ventral part of valva, and from N. venata by the dorsal part of valva without a protrusion at the apex. Female genitalia are illustrated here for the first time.

Figures

FIGURES 1 – 26. Adults of Nygmiini species. 1 – 2. Arna bipunctapex, 1. male, 2. female; 3 – 4. A. bicostata sp. nov., 3. male holotype, 4. female paratype; 5 – 6. Somena scintillans, 5. male, 6, female; 7 – 8. Orvasca subnotata, 7. male, 8. female; 9 – 10. Artaxa angulata comb. nov., 9. male, 10. female; 11. Euproctis sakaguchii, male; 12. A. digramma, male; 13 – 14. Toxoproctis croceola comb. nov., 13. male, 14. female; 15 – 16. Nygmia uniformis, 15. male, 16. female; 17 – 18. Euproctis montis, 17. male, 18. female; 19 – 20. E. telephanes, 19. male, 20, female; 21 – 22. E. yunnanpina, 21. male, 22, female; 23 – 24. E. piperita, 23. male, 24. female; 25 – 26. E. flavotriangulata, 25. male, 26. female. Scale bar = 2 cm.

FIGURES 35 – 40. Male genitalia of Nygmiini species. 35. Nygmia uniformis; 36. Euproctis montis; 37. E. telephanes; 38. E. yunnanpina; 39. E. piperita; 40. E. flavotriangulata.

FIGURES 41 – 49. Female genitalia of Nygmiini species. 41. Arna bipunctapex; 42. A. bicostata sp. nov.; 43. Somena scintillans; 44. Orvasca subnotata; 45. Artaxa angulata comb. nov.; 46. Toxoproctis croceola comb. nov.; 47. Nygmia uniformis; 48. Euproctis montis; 49. E. telephanes.