38 



DIPTERA OF MINNESOTA. 



Helobia hybrida, Meigen. A colored figure of one of the smaller 



species, Pachyrhina fcrrnginca, Fab., is shown in Plate II. 



Minnesota species : Bittacomorpha clavipes, Fab. ; Pachyrhina fer- 



rnginea, Fab. ; P. erythrophrys, Will ; Helobia punctipennis, Meig. ; 



Tipitla, Sp. ; T. abdominalis, Say; Discobola argus, Say; Pcdicia 



albivitta, Walk. 



A large number of specimens 

 returned from Washington, la- 

 beled simply Tipiila, sp., would 

 indicate that this group has not 



been at all well worked, and offers a fertile field for a dipterologist. 



\ 



"^■^W^^S^EOlgJi^ 



Fig. 22. Larva of Bittacomorpha clavifcs. 

 Natural size. After Hart. 



I'ig. 23. Chionea valga', "Snow Fly," Lugger. 



BLEPHAROCERIDAE=LIPONEURIDAE. 



Net-win gcd Midges. 



Rare flies of moderate size, frequenting the neighborhood of swift 



