Artaxa angulata ( Matsumura, 1927 ) Matsumura, 1927

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 : 59-60

Artaxa angulata ( Matsumura, 1927) comb. nov.

( Figs. 9–10 , 31 , 45 )

Euproctis angulata Matsumura, 1927: 40 ; Chao, 2003: 402.

Diagnosis. Forewing length 14–20 mm. Forewing yellow with two narrow, paler lines medially and forming a fuscous medial transverse band, the submarginal area with three black spots, two being at apex, and one near tornus. Male genitalia ( Fig. 31 ): uncus short, with a pair of acute processes on the lateral side; valva simple, tapering, acute at apex; saccus triangular; aedeagus short, straight. Female genitalia ( Fig. 45 ): Sterigma irregular, protruded at both sides; ductus and bursa relatively small, flimsy, the latter without signum.

Material examined. 63, 2Ƥ, Nanling National Nature Reserve, Guangdong, 29.VII.2008. 23, 1Ƥ, same locality, 23.VI.2009;

Distribution. China (Zhejiang, Fujian, Hunan, Guangdong, Guangxi, Sichuan, Yunnan, Shanxi, Taiwan), Burma, India, Pakistan, Sri Lanka, Malaysia, Singapore, Indonesia.

Remarks. The species is transferred to Artaxa Walker based on the uncus being flanked by a pair of acute processes, which is a typical feature of this genus. It is closely related to Euproctis sakaguchii Matsumura ( Fig. 11 , 32 ), but can be distinguished by the forewing with a black tornal spot and valva round apically.

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 27 – 34. Male genitalia of Nygmiini species. 27. Arna bipunctapex; 28. A. bicostata sp. nov.; 29. Somena scintillans; 30. Orvasca subnotata; 31. Artaxa angulata comb. nov.; 32. Euproctis sakaguchii; 33. A. digramma; 34. Toxoproctis croceola comb. nov..

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.