Scatella

Yang, Junhua Zhang Ding, 2005, Review of the subgenus Scatella Robineau­Desvoidy, 1830 from China (Diptera: Ephydridae), Zootaxa 931, pp. 1-11 : 2

Key to the species of the subgenus Scatella from China

1. First costal section greatly thickened in male ( Fig. 1 ) ........ Scatella bullacosta Cresson

­ First costal section without thickened in male .............................................................. 2

2. Cercus rather long, thick at base and slender at tip; surstylus with a distinct inner incision at tip in posterior view ( Fig. 12 ); gonite wide at base ............................................. ............................................................................................ Scatella henanensis sp. nov.

­ Cercus thick and short; surstylus without inner incision at tip in posterior view; gonite narrow at base................................................................................................................ 3

3. Wing dark brown with five distinct hyaline spots, spots located cell R4+5 near tip of wing like the body of a violin; veins near spots bent ( Fig. 30 ) ...................................... ................................................................................................ Scatella tenuicosta Collin

­ Wing lighter brown with five faint hyaline spots, spots located cell R4+5 near tip of wing oval; veins near spots not bent ............................................................................ 4

4. Spots located cell R2+3 square; phallapodeme slender; S7 divided into two small sclerites in femal ( Fig. 29 ) ........................................................... Scatella stagnalis (Fallén)

­ Spots located cell R2+3 rounded; phallapodeme moderately long; S7 complete in female ................................................................................................. Scatella lutosa (Haliday)

Figures

FIGURES 1 – 10. Scatella bullacosta Cresson. Male. 1. Wing; 2. epandrium, cerci and surstyli, posterior view; 3. epandrium, cerci and surstyli, lateral view; 4. aedeagus, anterior view; 5. aedeagus, lateral view; 6. gonite, anterior view; 7. gonite, lateral view; 8. phallapodeme, anterior view. 9. Female genitalia, ventral receptacle; 10. abdominal sternites and cerci.

FIGURES 11 – 19. Scatella henanensis sp. nov. Male. 11. Wing; 12. epandrium, cerci and surstyli, posterior view; 13. epandrium, cerci and surstyli, lateral view; 14. aedeagus, anterior view; 15. gonite, anterior view; 16. phallapodeme, anterior view; 17. aedeagus and gonite, lateral view. 18. Female genitalia, ventral receptacle; 19. abdominal sternites and cerci.

FIGURES 30 – 38. Scatella tenuicosta Collin. Male. 30. Wing; 31. epandrium, cerci and surstyli, posterior view; 32. epandrium, cerci and surstyli, lateral view; 33. aedeagus, anterior view; 34. gonite, anterior view; 35. phallapodeme, anterior view; 36. gonite, lateral view. 37. Female genitalia, ventral receptacle; 38. abdominal sternites and cerci.

FIGURES 20 – 29. Scatella stagnalis (Fallén). Male. 20. Wing; 21. epandrium, cerci and surstyli, posterior view; 22. epandrium, cerci and surstyli, lateral view; 23. aedeagus, anterior view; 24. aedeagus, lateral view; 25. gonite, anterior view; 26. gonite, lateral view; 27. phallapodeme, anterior view. 28. Female genitalia, ventral receptacle; 29. abdominal sternites and cerci.