430 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



Neolimnophila ultima (O. S.) (Fig. 47, B). 



18o9. Limn.opJiUa ultima Osten Sacken; Proc. Acad. Nat. Sci. Phil- 

 adelphia, 1859 : 238. 



Figs.— Osten Sacken, Ibid., pi. 4, fig. 26; 1859. Osten Sacken, Mon. Dipt. N. 

 Amer.. 4, pi. 4, fig. 24 (hyp.) : 1869. Alexander, Cfls. N. Y., 1, pi. 38, fig. 127 (wing) ; 

 1919. Crampton, Insec. Inscit. Menst., 13, pi. 3, figs. 18, 2Z (tliorax) ; 1925. Dickin- 

 son. Cfls. Wise, p. 198, fig. 86 (wing) ; 1932. 



General coloration gray, the praesciitum with four dark brown 

 stripe-s. Halteres chiefly j^ale. Wings subhyaline, stigma faintly in- 

 dicated (Fig. 47. B). The members of this genus, in common with all 

 other Cladnraria. have the basal flagellar segments united into a fu- 

 sion-segment. $ . L. about 5-6 nun. ; w. 7-7.5 mm. 9 . L. 7-8 mm. ; 

 w. 8-9 uim. 



(May; Sept., Oct.) Ont., Que., Me., N. H., Vt., Mass., N. Y., westw. and north- 

 westw. to Mich., Iowa, Alta. and Alaska, southw. to Ga. and Miss. (Eastern Pa- 

 laearctic). 



Connecticut.— W. Granby, Sept. 11, 1928 (C. P. A.). 



2. Subtribe Gonomyaria 



Gnophomyia Osten Sacken 



1859. Gnophomyia Osten Sacken; Proc. Acad. Nat. Sci. Philadel- 

 phia, 1859 : 223. 



An extensive genus of medium-sized flies, with two species within 

 our faunal limits. The adult flies may be swept from rank vegeta- 

 tion in mesophytic woodlands. The immature stages occur beneath 

 the bark of decaying deciduous trees. 



Key to Species 



1. Apical cells of wings with macrotrichia ; halteres black throughout ....luctuosa 

 Cells of wings without macrotrichia; knobs of halteres light yellow tristissima 



Gnophomyia luctuosa O. S. 



1859. (rnopJiomi/ia hwtuosa Osten Sacken: Proc. Acad. Nat. Sci. Phil- 



adelphia, 1859:224. 



1860. Lvmnohia nigricola Walker: Trans. Ent. Soc. London (n. s.), 



5 : 333. 



Body, with antennae, legs, halteres and wings black. Wings with 

 basal section of R^ perpendicular to end of /?§, subequal in length to 

 r-m. ^ . L. 6-7 mm. ; w. 7-8 mm. $ . L. 7.5-8 mm. ; w. 7-7.5 mm. 



(May-Aug.) S. Ind., 111., D. C, southw. and southwestw. to Fla. and Miss. 

 (Austral). 



G. tristissima O. S. (Fig. 47, C) . 



1859. Gnophom.ijia tristissima Osten Sacken: Ihid., 1859:224. 



Figs.— Osten Sacken, Ibid., pi. 4, fig. 18; 1859. Osten Sacken, Mon. Dipt. N. 

 Amer., 4, pi. 2, fig. 5 (wing), pi. 4, fig. 19 (hyp.) ; 1869. Needham, 23rd Kept. N. Y. 

 St. Ent. for 1907. pi. 24, fig. 2 (ven.) ; 1908. Alexander, Cfls. N. Y., 1, pi. 2>7, 

 fig. 100 (wing) ; 1919. Crampton, Ann. Ent. Soc. America, 18, pi. 3, fig. 8 (thorax) ; 

 1925. Dickinson, Cfls. Wise, p. 190, fig. 71 (wir.g) ; 1932. 



