Stenoloba acutivalva Han & Kononenko 2009

Han, H. L. & Kononenko, V. S., 2018, Twelve new species and four new records of Stenoloba Staudinger 1892 from China (Lepidoptera, Noctuidae: Bryophilinae), Zootaxa 4388 (3), pp. 301-327 : 313

Stenoloba acutivalva Han & Kononenko 2009

( Figs 19 , 52 )

Stenoloba acutivalva Han & Kononenko 2009 , Zootaxa 2268: 18, figs 17, 34 (Holotype: male, China, Aut. Reg. Guangxi, Guilin , IZCAS, Beijing).

Material examined. 2 males, 1 female, China, Prov. Yunnan, Simao, Beishan , 17.vi.2013, H.L. Han & C. Zhang leg., slide HHL-6142-1, HHL-6143-1; female HHL-6144-2, coll. NEFU.

Diagnosis. This and next two species belong to the S. viridescens species group, represented in China by four species ( S. viridescens is not treated here). Externally S. acutivalva ( Fig. 19 ) differs from its allies by simpler forewing pattern, clearly marked with moss-green, and with white basal field, inner part of subbasal field and subtornal mark. Orbicular not expressed, reniform marked as 1–2 blackish dots, or not or expressed, as greyish suffusion. The male genitalia (illustrated by Han & Kononenko 2009) are characterized by the structure of the valva with upcurved acute apex and quadrangular plate in apical part of costal margin of valva. The structure of aedeagus and vesica are similar to that of allied species. The female genitalia ( Fig. 52 ) could be characterized by quadrangular papillae anales, elongate, slightly conical shape of antrum, and rather long sclerotised ductus bursae with characteristic for the species-group and for the species sclerotised appendix, which joining with posterior part of ductus almost under straight angle; corpus bursae rounded and wrinkled.

Distribution. South China (Aut. Reg. Guangxi, Prov Yunnan).

Notes. The female genitalia are described for the first time.

Figures

FIGURES 16–30. Stenoloba spp., adult. 16. S. albistriata, female, slide HHL-6182-2; 17. S. brunnescens, male, slide HHL- 6140-1; 18. S. rectilinea, male, slide HHL-6135-1; 19. S. acutivalva, female, slide HHL-6144-2; 20. S. motuoensis, female, slide HHL-2924-2; 21. S. speideli, female, slide HHL-6148-2; 22. S. glaucescens, male, slide HHL-2455-1; 23. Ditto, female, slide HHL-3185-2; 24. S. nora, male, slide HHL-6166-1; 25. Ditto, female, slide HHL-6167-2; 26. S. plumbeoculata, female, slide HHL-6164-2; 27. S. viridicollar, male, slide HHL-6517-1; 28. S. basiviridis, male, slide HHL-6175-1; 29. S. pulla, male, slide HHL-3179-1; 30. S. dominula, male, slide HHL-6169-2 [all materials from coll. NEFU].

FIGURES 48–57. Stenoloba spp., female genitalia. 48. S. huanxipoa sp. n., paratype, slide HHL-3176-2; 49. S. acontioides sp. n., holotype, slide HHL-6185-2; 50. S. assimilina sp. n., paratype, slide HHL-3853-2; 51. S. albistriata, slide HHL-6182-2; 52. S. acutivalva, slide HHL-6144-2; 53. S. motuoensis, slide HHL-2924-2; 54. S. speideli, slide HHL-6148-2; 55. S. glaucescens, slide HHL-3185-2; 56. S. nora, slide HHL-6167-2; 57. S. plumbeoculata, slide HHL-6164-2 [all materials from coll. NEFU].