I No. 64] DIPTERA OF CONNECTICUT : TAXONOMY 387 



Wings narrow in both sexes, with an al)un(lant brown pattern, 

 more broken and interrupted than in april'ma^ there bein^^ two dark 

 areas at outer end of cell ^nd A, the last larger, the penultimate at end 

 of vein 2nd A. Male hypopygium with outer dististyle (Fig. 45, 1) : 

 lateral flange placed at about four-fifths the length of style. $ . L. 

 about 5-5.0 mm. ; w. 5.5-7 mm. $ . L. about 0-6.5 mm. ; w. 7-7.5 mm. 



(June- Aug.) Out., Que., Me., N. H., Vt., Mass., N. Y., N. J., westw. to Ind. and 

 Mich., southw. to N. C, S. C, Tenn. and Fla. (Canadian, Transition). 



L. {ElaeopMla) vernata Alex. (Fig. 45, J). 



1927. Limnophila {E phelia) veniata Alexander; Bull. Brooklyn Ent. 

 Soc, 22: 59-60. 



Fig. — Alexander, Ibid., p. 64, fig. 5 (hyp.) ; 1927. 



A small species with narrow wings, having an unusually abun- 

 dant clouded and dotted pattern. Male hypopj^gium Avith outer disti- 

 style (i-'ig. 45, J) gently widened outwardly, broadest about opposite 

 the level of the lateral flange, the latter slender and nearl}^ straight; 

 apical spine genth' curved. $. L. 4-4.3 mm.; w. 5-5.5 mm. 9. L. 

 about 5.3 nnu. ; w. 5.8 mm. 



(Late Apr. -early June) N. C, s. Ind. (Transition). 



Subgenus Idiolimnophila Alexander 



1934. Limnophila {IdloUm7ioph}la) Alexander; m, (.'lu-ran. Key to 

 the Immilies and Genera North American Diptera, p. 40. 



Antennae short, the verticils coarse, exceeding the segments. Head 

 broad, not narrowed posteriorly. Tuberculate pits obsolete or nearly 

 so; pseudosutural foveae large, remote from margin. Wings (Fig. 

 43, O) with cell ^3 narrowly to broadly sessile; cell Mi lacking; >Sc 

 ending opposite or just beyond the fork of Es^ Sco near the tip of Scx\ 

 m-cu at near midlength of cell 1st M2] anterior arculus preserved. 

 Male hypopygium with the outer dististyle profoundly bifid, each arm 

 terminating in an acute blackened point. 



Besides the subgenotype, emmelina Alexander, it is highly prob- 

 able that LinmophUa antennata Coquillett (Western Nearctic) will 

 likewise fall within the limits of the subgenus. The venation is very 

 similar in the two species, but the elongate antennae of the male and 

 the general structure of the male hypopygium are very distinct from 

 the condition found in emtmlina. The adult flies of this latter species 

 have been swept from rank herbage along small mountain streams. 

 The early stages are quite unknown. 



Limnophila (/r/ioZ2Wi^o;?M«) emmelina Alex. (Fig. 43, O). 

 1914. Limnophila emmelina Alexander; Proc. Acad. Nat. Sci. Phil- 

 adelphia, 1914:597. 



Figs.— Alexander. Ibid., pi. 27, fig. 28 (ven.) ; 1914. Alexander, Cfls. X. V.. 1. 

 pi. 40, fig. 151 ; 1919. 



General coloration polished reddish yello^- or brownish yellow, 

 the praescutum without distinct darker markings, or with a more in- 



