Empididae. 289 



— Abdomen wilhout bands; middle tibiæ almost witli- 



out spine; size 2 mm 5. interjecta. 



9. Antennæ dark witli the two basal joints yellow 10. 



— Antennæ quite yellow 18, 



10. Front coxæ and femora except the apical part black 7. annulipes. 



— All legs yellow 11. 



1 1 . Abdomen yellow 12. varia. 



— Abdomen black 12. 



12. Pleura wilh a black, polished spot above the middle 



coxæ 13. 



— Pleura without any black, polished spot 17. 



13. Apical spine on the middle tibiæ small 10. articidata. 



— Apical spine on the middle tibiæ not small 14. 



14. Palpi large; cubital and discai vein curved equally 



towards each other; size 3,5 — 4,3 mm 13. cursitans. 



— Palpi small; size not beyond 3,5 mm 15, 



15. Abdomen quite black; tarsi not annulated; anterior 



femora only slightly thickened; size 1,5 mm 9. calceatu. 



— Abdomen with grey bands on the first segments; 

 anterior femora more thickened; tarsi more or less 

 annulated; size at least 2,5 mm 16, 



16. Third antennal joint short, distinctly shorter than the 

 arista; anterior femora not much thickened; tarsi in- 



distinctly annulated; cubital vein almost straight . . . . 8. bicolor. 



— Third antennal joint longer, slightly shorter than the 

 arista ; anterior femora more thickened ; tarsi an- 

 nulated; cubital vein curved downwards 11. palUdiventris. 



17. Frons narrow; discai vein strongly curved and bending 

 upwards in a long curve ; bands on abdomen not 



broad 14. candicans. 



— Frons broader; discai vein with a smaller, somewhat 

 sudden curve before the apex; abdomen with broad 



bands 15. fasciata. 



18. Cubital and discai vein distinctly converging; middle 

 femora considerably thicker than front femora; size 



4—5 mm 16. major. 



— Cubital and discai vein slightly converging or almost 

 ' parallel ; anterior femora of about equal thickness ; 



size 2 — 2,8 mm 1 ••• 



19. Antennæ and legs yellow; tarsi distinctly black an- 

 nulated 17. favicornis. 



— Antennæ white; legs whitish or pale yellowish; tarsi 



not, or indistinctly brownish annulated 18, alUcornis. 



20. Two long dorsocentral bristles behind in each row; 

 scutellum with four distinct, black bristles 21. agilis. 



— One long dorsocentral bristle behind in each row; 

 scutellum with only two distinct bristles 21. 



21. Middle tibiæ with the basal part black; legs longish 



haired; thorax pruinose with a shining iniddle line 19. minuta. 



10 



