446 COXXECTICUT GEOL. AND XAT. HIST. SURVEY [Bull. 



Subgenus Empeda O. S. 



1869, Ennpeda Osten Sacken; Mon. Dipt. X. Amer.. -1 : l.s:M,S4. 



A wide-spread group, with two species occurring in our limits. 

 Very rec^ently, P]dwards has recognized the genus Cheilotrichia Rossi 

 (Verz. Oesterreich. Dipt., 1848:12) as valid and has placed the pres- 

 ent subgenus, a.s well as the next. Gonempeda Alexander, as subgenera 

 therein. 



Key to Species 



]. Wings sul)hyaline, immaculate; vein Rs longer than /?:;+, (Tig. 50, B) 



stigmatica 

 Wings dusky gray with the stigma and a narrow clouding along cord pale 

 brown : vein R.: subequal to or shorter than R-.i+t noctivagans 



Erioptera {Empeda) noctivagans Alex. 



1917. Erioptera {Empeda) noctivagans Alexander: Can. Ent., 49: 

 200-201. 



Fig.— Alexander, Ibid., 49:203. pi. 12, fig. 5 (wing): 1917. 



General coloration grayish l)r()wn. the huniei-al region of praescu- 

 tuni yellow. Halteres yellow. Legs brown, i. L. 3-3.2 mm.; w. 

 4.6-4.S mm. 9. L. 3.8-4 mm.; w. 5,5-5.8 mm. 



(Oct.) Va., Fla. (Austral). 



E. {Empeda) si\^m3.i\c?i {O.^.) (Fig. 50. B). 

 1869. Empeda stigmatica Osten Sacken: Mon. Dipt. X. Amer., 4: 

 184-185. 



Figs.— Alexander, Cfls. X. Y., 1. pi. .15, fig. 85 (ven.) ; 1919. Crampton, In- 

 sec. Inscit. Menst., 13, pi. 3, fig. 11 (thorax) ; 1925. 



General coloration brownish gray: pleura more buH'v. Halteres 

 yellow. Legs chiefi}^ oliscure yellow, the outer segments darkened. 

 Abdomen pale brown; hypopygium yellow. $ . L. 4-4.5 mm. ; w. 4-4.5 

 mm. 9. I>. 4.5-5 nun.; w\ 4.5-5 nun. 



(May- Aug.) Out., Que.. N. B.. Me., N. H., Vt., Mass., X. Y., westw. to Mich., 

 southw. to X. C. and Tenn. 



Connecticut.— Granbv, Tune 8, 1929 (C. P. A.); Hartland, Tune 9, 1929 (C. P. A.); 

 Xorfolk. lune 9, 1929 (C. P. A.): Rivcrton. Tune 8. 1929 (C. P. A.). Salisburv, 

 Sept. 5, 1928 (G. C. C): Tvler Lake, Tune 13, 1931 (C. P. A.); W. Granbv, June 

 8, 1929 (C.P. A.). 



Subgenus Gonempeda Alex. 

 1924. Gonempeda Alexander; Proc. Y . S. Xat. Mus., 64, art. 10:8. 



A single species in the local fauna. The adult flies occur in 

 swarms beneath trees and shrubs growing along small streams. The 

 early stages presumably live in the saturated earth at the water's mar- 

 gin. 



Edwards noAv considers that this subgenus, as well as Empeda 

 Osten Sacken, are more properly subgenera of the Palearctic group 

 Chedoti'iehia Rossi. 



