No. 64] DIPTERA or CONNECTICtJT : TAXONOMY 189 



Figs.— Alexander, Ibid., 24, pi. 8, fig. 10 (ven.). Alexander, Cfls. N. Y., 1, 

 pi. 41, fig. 166 (ven.); 1919. Crampton, Ann. Ent. Soc. Amer., 18, pi. 4, fig' 13 

 (thorax) ; 1925. Dickinson, Cfls. Wise, p. 174, fig. 43 (ven.) ; 1932. 



General coloration dark brown, the praescutum without stripes. 

 Halteres and legs brown. Wings strongly infuscated, the veins with 

 long trichia. $. L. 7 mm.; w. 9-10 mm. 9, L. 8-9 mm.; w. 9-11.5 

 mm. 



(June-Aug. ; Nov.) Ont, Que., N. B., N. Y., westw. to Wise, Colo, and Wasli. 

 (Hudsonian, high Canadian; in coniferous woods). 



Trichocera Meigen 



1800. Petaurista Meigen; Nouv. Class. Mouches, p. 15 (nom. nud.). 

 1803. Trichocera Meigen ; Illiger's Mag., 2 : 262. 



1924. Trichocerodes Brethes; Commun, Mus. Nac. Buenos Aires, 2: 

 172. 



The taxonomy of our local species is still much involved and 

 more work must be done before an accurate idea of synonymy and 

 distribution is obtained. Several species are widely distributed in the 

 North Temperate Zone while others seem to be much more restricted 

 in their range. 



Key to Species 



1. Wings unmarked except for the stigmal darkening 2 



Wings variously marked with brown, in addition to the stigmal area 3 



2. Base of wing somewhat paler than the remainder; male hypopygium with 



dististyle at base bearing a very small, slender tubercle saltator 



Wings not paler at base; male hypopygium unusually complex, the dististyle 

 long and slender, near base bearing a long slender rod that is about one- 

 third the total length of style .salmani 



3. Wings with all veins except the Anals seamed with brown, more distinct at 



and beyond the cord venosa 



Wings without seams on veins beyond cord 4 



4. Wings with a dark cloud on anterior cord; no dark spot in cell R beneath 



origin of Rs 5 



Wings with a dark spot in cell R beneath origin of Rs, additional to a dark- 

 ened cloud on anterior cord 6 



5. Wings strongly suffused with dusky ; male hypopygium with dististyle bear- 



ing a conspicuous ear-like lobe at base garretti 



Wings hyaline or nearly so; male hypopygium with dististyle cylindrical, un- 

 armed regelationis 



6. Femora yellowish, with a subterminal brown ring ; wings with a more or less 



distinct dark cloud in cell Rz 7 



Femora yellowish brown, the tips narrowly darkened; no dark cloud in outer 

 radial field fernaldi 



7. Abdominal tcrgites conspicuously dimidiate, their bases pale, the outer half 



darkened; male hypopygium without tubercle at base of dististyle. ...bimacula 

 Abdominal tergites uniformly darkened; male hypopygium with a small tu- 

 bercle on mesal face of dististyle at base maculipennis 



Trichocera bimacula Wk. 



1848. Trichocera himacida Walker; List Dipt. Brit. Mus., 1: 84. 

 1923. T. limacula Edwards; Ann. ]Mag. Nat. Hist., (9) 12:492. 



Fig.— Crampton, Ann. Ent. Soc. Amer., 18, pi. 4, fig. 11 (thorax); 1925. 



