FAMILY CERATOPOGOXID.E — THE BITIXG MIDGES 



77 



15. Branches of fourth vein petiolate basally 16 



Branches of fourth vein arise at or before the crossvein 17 



16. At least one pair of femora with spines beneath Pseudobezzia Malloch 



Femora without spines beneath Parabezzia Malloch 



17. Posterior branch of the fourth vein elbowed basally in the female (12). 



Stenoxenus Coquillett 

 Posterior branch of fourth vein not elbowed 18 



18. At least one pair of femora with spines beneath (11) Bezzia Kieffer 



Femora without spines beneath Probezzia KiefFer 



CeratopoKonkl.'e. — 1, Serromyia ; 2. Clinohelea ; 3. Forcipomyia; 4. Atrichopogon ; 5, 

 Dasyhelea; 6. Johannsenotn> ia ; 7, Monohelea; 8, Ceratopogon ; '.t, Culicoides, thorax; 10, 

 Culicoides cockcrelli ; 11, Bezzia; 12, Stenoxenus. 



