Neochauliodes

Liu, Xingyue, Hayashi, Fumio & Yang, Ding, 2010, Revision of the fishfly genus Neochauliodes van der Weele (Megaloptera: Corydalidae) from India and adjacent regions of South Asia, Zootaxa 2692, pp. 33-50 : 34-35

Key to adults of Neochauliodes from India and adjacent regions in South Asia

1. Posterior second and third veins of Rs strongly curved posteriad ( Fig. 7 ) ................................. N. truncatus Kimmins

- All branches of Rs without distinct curve ( Figs 1–6 ) ................................................................................................... 2

2. Wings dark with several small hyaline spots ( Fig. 4 ); female eighth sternum with posterior margin acutely produced ( Fig. 24 ). ............................................................................................................................... N. obscurus van der Weele

- Wings hyaline with dark markings; female eighth sternum with roundly convex posterior margin............................ 3

3. Forewings and hindwings with broad dark transverse markings ( Fig. 6 ) .......................... N. subfasciatus (Westwood)

- Wings without broad transverse markings.................................................................................................................... 4

4. Male ninth tergum broadened ventrally, forming sinuate posterior margin in lateral view ( Figs 15 , 20 ); lateral arms of male tenth sternum fused with median plate without protrusion ( Figs 14 , 19 ); female ninth gonocoxite much shorter than tenth tergum ( Figs 16 , 21 )......................................................................................................................... 5

- Male ninth tergum narrowed and produced posteroventrad ( Figs 8 , 25 , 30 , 35 ); lateral arms of male tenth sternum connected with median plate by narrow protrusions ( Figs 9 , 26 , 31 , 36 ); female tenth tergum subequal in length to ninth gonocoxite............................................................................................................................................................ 6

5. Forewings with markings on proximal half of costal areas punctuate and clearly isolated from each other ( Fig. 3 ); male tenth tergum with distomedial surface round ( Fig. 18 )....................................................... N. nepalensis sp. nov.

- Forewings with markings on proximal half of costal areas subquadrate and almost contiguous with neighbouring cellules ( Fig. 2 ); male tenth tergum with distomedial surface angulate ( Fig. 13 ) ............... N. indicus (van der Weele)

6. Forewing length 28–34 mm in male and 38–40 mm in female; male tenth sternum with median plate slightly broadened medially and laterally with a pair of elevated ridges in ventral view ( Fig. 9 ) ...................... N. fletcheri Kimmins

- Forewing length 27 mm in male and 29–33 mm in female; male tenth sternum with median plate gradually narrowed apically and laterally without distinct ridges in ventral view ( Fig. 26 ) .......................................... N. simplex (Walker)

Figures

FIGURES 1 – 7. Habitus images of Neochauliodes spp. 1. N. fletcheri Kimmins, holotype male; 2. N. indicus (van der Weele), paralectotype male; 3. N. nepalensis sp. nov., holotype male; 4. N. obscurus van der Weele, holotype female; 5. N. simplex (Walker), lectotype male; 6. N. subfasciatus (Westwood), lectotype male; 7. N. truncatus Kimmins, holotype male. Scale bars = 5.0 mm.

FIGURES 23 – 24. Neochauliodes obscurus van der Weele. 23. Female genitalia, lateral view; 24. Female eighth sternum, ventral view. Scale bars = 1.0 mm.

FIGURES 13 – 17. Neochauliodes indicus (van der Weele). 13. Male genitalia, dorsal view; 14. Male genitalia, ventral view; 15. Male genitalia, lateral view; 16. Female genitalia, lateral view; 17. Female eighth sternum, ventral view. Scale bars = 1.0 mm.

FIGURES 18 – 22. Neochauliodes nepalensis sp. nov. 18. Male genitalia, dorsal view; 19. Male genitalia, ventral view; 20. Male genitalia, lateral view; 21. Female genitalia, lateral view; 22. Female eighth sternum, ventral view. Scale bars = 1.0 mm.

FIGURES 8 – 12. Neochauliodes fletcheri Kimmins. 8. Male genitalia, lateral view; 9. Male tenth sternum, ventral view; 10. Male tenth tergum, dorsal view; 11. Female genitalia, lateral view; 12. Female eighth sternum, ventral view. T and S 8 - 10: eighth to tenth tergum and sternum; Gx 9: ninth gonocoxite; lar: lateral arm; mpl: median plate. Scale bars = 1.0 mm.

FIGURES 25 – 29. Neochauliodes simplex (Walker). 25. Male genitalia, lateral view; 26. Male tenth sternum, ventral view; 27. Male tenth tergum, dorsal view; 28. Female genitalia, lateral view; 29. Female eighth sternum, ventral view. Scale bars = 1.0 mm.

FIGURES 30 – 34. Neochauliodes subfasciatus (Westwood). 30. Male genitalia, lateral view; 31. Male tenth sternum, ventral view; 32. Male tenth tergum, dorsal view; 33. Female genitalia, lateral view; 34. Female eighth sternum, ventral view. Scale bars = 1.0 mm.

FIGURES 35 – 39. Neochauliodes truncatus Kimmins. 35. Male genitalia, lateral view; 36. Male tenth sternum, ventral view; 37. Male tenth tergum, dorsal view; 38. Female genitalia, lateral view; 39. Female eighth sternum, ventral view. Scale bars = 1.0 mm.