No. 64] 



DIPTERA OF COXNPXTICUT ; TAXONOMY 



43c 



Praescutum polished black, Imineral re<ri(jii li<rlit yellow: pleura 

 with a whitish longitudinal stripe. Knobs of halteres weakly dark- 

 ened. Wings relatively narrow. $ . L. 3.5-4.2 mm. ; w. 4.2-4.5 mm. 



(July. Aug.) Va., westw. to Ind. and Mo., southw. to Ga. and n. Fla. ("Austral ). 



Gonomyia Meigen 



1818. Gonomyia Meigen; Syst. Beschr. Eur. Dipt., 1 : 146. 

 1869. Goniomyia Osten Sacken ; Mon. Dipt. N. Amer.. 4 : 176. 



One of the largest genera of eriopterine Tipulidae. The flies fre- 

 quent shaded places in woods (as florens)^ open ravines (as hidentata) ^ 

 and similar situations. Others are very characteristic of the sandy 

 margins of streams, where they may be swept from herbage, as aJe.v- 

 anderi, sacandaga, viathesoni^ sulyhurella^ kmisensis, novehoracensis^ 

 etc.). The early stages occur in wet soil. 



The chief venational peculiarities lie in the small cell ^3, which is 

 lost in most species of the subgenus Lipophleps. The adults are most 

 often colored yellow and dark brown, in contrasted patterns. 



Key to Subgenera 



1. Two branches of Rs reach the wing-margin (Fig. 47, F, G) . . Lipophleps (part) 

 Three branches of Rs reach the wing-margin (Fig. 47, H-K) 1 



FiGUKE 48. Gonomyia, cognatella group : male hypopygia. 



A. Gonomyia (Gonomyia) armigera Alex. 



B. G. (G.) armigera Alex. 



C. G. (G.) cognatella O. S. 



D. G. (G.) florcus Alex. 



E. G. (G.) kansensis Alex. 



F. G. (G.) rcflcxa Alex. 



Symbols: a, aedeagus ; b, basistyle ; g. gonapophysis ; id, inner dististyle; od, 

 outer dististvle. 



