Xo. 64] DIPTERA OF CONNECTICUT : TAXONOMY 469 



Belongs to the nignpila group. Male hypopygium with the inner 

 dististyle unusually short and stout, the expanded apex more or less 

 bilobed. $. L. about 3-3.2 mm.; w. 4-4.2 mm. 9. L. about 3.5 

 mm. ; w. 4-4.4 mm. 



(June) Que., N. B. 



O.holotricha (O. S.) 



1859. Erioptera holotricha Osten Sacken ; Proc. Acad. Nat Sci, Phil- 

 adelphia, 1859 : 226. 



1869. Rhypholojyhus holotrichus Osten Sacken ; Mon. Dipt. N. Amer., 

 4:143-144. 



General coloration pale gray to yellowish gray, the praescutum 

 scarcely striped. Antennae entirelj^ brownish black. Halteres yellow. 

 Wings pale yellowish brown, the stigma barely darker. Male hypopyg- 

 ium with the outer dististyle a small acute black spine from a pale 

 conical base; inner dististyle much longer, appearing as an angulated 

 or sinuous rod, blackened and sparsely setiferous on outer half. $. 

 L. about 4.5-5 mm.; w. 4-4.5 mm. 9. L. al)out 5-5.5 mm.; w. about 

 5.5-5.8 mm. 

 (Late Apr., May) N. H., Vt., Mass., N. Y., soutlnv. to N. C and Tcnn. 



O. hubbelli Alex. 



1926. 07'7}iosia hublelH Alexander; Insec. Inscit. Menst., 14:20-21. 



Belongs to the Mvittata group. General coloration brown, the 

 praescutum with two dark brown longitudinal stripes. Halteres with 

 dark brown knobs. Wings strongly tinged Avith brown, the stigina 

 scarcely darker. Male hypopygium with the outer dististyle a trifle 

 longer than inner, blackened and microscopically serrulate along outer 

 margin. $. L. about 5 mm. ; w. 5 mm. 



(Aug.) Man., Minn., N. Dak. 



O. ingloria Alex. (Fig. 53, H). 



1929. Orinosia ingloria Alexander; Can. Ent., 61 : 21-22. 



Fig.— Alexander, Ibid., 61 : 21, fig. 3 (hyp.) ; 1929. 



Closely allied to nimUpennis, differing especially in the structure 

 of the male hypopygium (Fig. 53, H) . $. L. about 4 mm. ; w. 4.8-5 

 mm. ? . L. about 4.8 mm. ; w. 5.2 mm. 



(Aug.) Ont., Ind. 



O. innocens (O. S.) ^ , ^r ^^ * v v 



1869. Rhypholophus innocens Osten Sacken; Mon. Dipt. ^. Amer., 



4:142. 

 Figs -Alexander, Cfls. N. Y., 1, pi. 34, fig. 56 (wing) ; 1919. Crampton, Trans. 

 Amer. Ent. Soc, 48, pi. 10, fig. 38 (hyp.) ; 1923. 



General coloration gray. Antennae black throughout. Knobs of 

 halteres weakly darkened. Male hypopygium with the mesal face of 

 dististyle set with a few large marginal teeth. 6. L. 4...-0 mm., 

 w 5-6 mm. 9 . L- 5-5.5 mm. : w. 5.5-6.5 mm. 



