DIPTERA 



SYRPHINA. 



145 



Platychirus albimanus Fabr. 



ciKatus — albimanus. 



quadratus Say. 

 Pocata alopex — Croiprora. 



cianella — Crioprora. 



bomboides Hun. 

 Scseva arciiata — Syrphus. 



geminata — Mesogramma. 



marginata. — Mesogramma. 



obliqua — Allograpta. 



quadratus — Platychirus. 

 Sparzigaster bacchoides — Baccha clav- 



ata. 

 Sphasrophoria dubia Big. 



infumata Thom. 



melanosa Wil. 



micrura O.S. 



pyrrhina Big. 



sulphuripes Thom. 

 Specomyia brevicornis O.S. 

 Spilomyia interrupta Wil. 

 Syritta pipiens (Linn.) 

 Syrphus senaus — Eristalis. 



albimanus — Platychirus. 



americanus — Wied. 



arcuatus Fall. 



bicolor — Pa rag us. 



clavata — Baccha. 



fumipennis Thom. 



infumata — Sphaerophora. 



intrudens O.S. 



lapponicus — arcuatus. 



opinator O.S. 



pigra — Xylota. 



protritus O.S. 



quinquelimbatus Big. 



ribesii Linn. 



sulphuripes — Sphaerophora. 



velutinus Wil. 

 Triodonta curvipes Wied. 

 Tropidia quadrata Say. 

 Volucella avida O.S. 



tan Big. 



temnocera Loew. 

 Xylota analis Wil. 



barbata Loew. 



curvipes Lew. 



ejuncida Say. 



flavitibia Big. 



obscura Loew. 



Figrure 153 



Jill 

 Syrphus fly. 



pigra Fabr. 

 esuriens Fabr. 

 marginata — Copestylur 

 megacephala Loew. 

 mexicana — esuriens. 



PIPUNCULID^. 

 The flies are notable by their large heads. The larvge are parasitic. 

 Small parasitic flies. 

 Pipicula bidens Cres. Pipuncutus aridus Wil. 



PHORINA 



PHORID/E. 



The hunchback flies have very diverse food habits. 



Aphiochaeta minuta Aid. 

 pulicaria Fall, 

 pygmoea Zett. 



Phora rufipes Meig. 

 Trineura aterrima (Fabr.) 

 velutina Meig. 



