CONOPIDJE. 91 



7. Hind femora with a projection below: 



Senogaster, 2, 9. Tropidia, 2. 



Spilomyia, 4. Milesia, 1, 2. 

 Polydontomyia, 2, 10. 



8. Eyes pubescent : 



Syrphus, pt. Didea, pt. 2. 



Microdon, pt. 4. Chilosia, pt. 5. 



Megametapon, 14. Chrysotoxum, 4. 



Mallota, pt. 2, 10. Psilota. 



Pipiza, 4. Paragus, 4. 



Leucozona. Catabomba. 



Eristalis, pt. 1, 4. Volucella, pt. 1, 4, 5. 



Copestylum, 1, 4, 5. Priomerus, 2. 1. 

 Chrysochlamys. 



9. Abdomen spatulate or narrowed conspicuously at the base : 



Sphyximorpha, 4. Mixogaster, 4, 3. 



Khopalosyrphus, 3, 4. Ceriogaster, 1, 2. 



Senogaster, 2, 7. Salpingogaster, 2. 



Baccha. Bacchina. 



Spegina. Xeoascia. 

 Ceria. 



10. Males dichoptic : 



Pelecocera. Megametapon, 1, 4, 5, 8. 



Rhopalosyrphus, 3, 4, 9. Asemosyophus, 2. 



Mixogaster, 3, 4, 9. Helophilus, 2. 



Omegasyrphus, 3, 4. Mallota, pt. 2, 8. 



Ubristes, 3, 4. Polydontomyia, 2, 7. 



Microdon, 3, 4, 8. Chamosyrphus. 

 Chalcomyia. 



29. CONOPID^E. 



Thinly pilose or nearly bare, more or less elongated species. 

 Head broad; front broad in both sexes; ocelli present or 

 absent. Antennae porrect, composed of three simple joints, 

 the third with a dorsal arista or terminal style. Oral opening 

 large ; proboscis slender. Abdomen more or less elongated, 

 often constricted toward the base. Basal cells of wing usually 

 large, the third (anal) closed ; three posterior cells, the first 

 closed or much narrowed ; no spurious vein. 



