THE DIPTERA 



Wiedemann, 1819; C. chrysostigma Wiedemann, 182S; C. ruhra- 

 marginata Macquart, 1885; C. quinquemaculata Austen, 1908; C. 

 biclausa Loew, i860; C. chrysophila Macquart, 1834; C. distanti 

 Austen, 1912; C. speciosa Austen, 1912; C. flavicoma Austen, 1912; 

 and C. obscura Ricardo, 1908. The females have been observed 

 to bite man, but very httle is known as to the habits or Hfe-history 

 of the species of this genus. 



Pangonia Latreille, 1802. 

 This widely distributed genus used to contain a very large number 

 of species, but has of late been split up into several subgenera, 



Fig. 415. — Pangonia ruppellii Jaennicke, 1867: Female. (X3-) 



as may be shown in the following table taken from Miss Ricardo's 

 paper in The Annals and Magazine of Natural History, Series 7, 

 vol. v., January, 1900: — 



I. Wings with first posterior cell closed. 



(a) Eyes bare — Pangonia Latreille {subgenus Pangonia) . 



(b) Eyes hairy — Pangonia Latreille (subgenus Erephopsis 



Rondani). 



n. Wings with first posterior cell open. 



[a) Eyes hairy — Diatomineura Rondani (subgenus Diato- 



(b) Eyes bare — Diatomineura Rondani (subgenus Corizo- 

 neura Rondani). 



mineura) . 



