No. 64] DIPTERA OF CONNECTICUT : TAXONOMY 243 



9. Antennae ( S ) with flagellar segments slender, very feebly excised ; basal 

 enlargements dark, the remainder light yellow ; male hypopygium with a 

 strong median tooth near caudal border of the extensive tergal saucer 

 (Fig. 27, A), the latter entirely blackened, with lateral spines; inner disti- 



style a little expanded and bidentate at apex balioptera 



Antennae ( $ ) with flagellar segments stouter and more strongly excised ; 

 basal enlargements dark brown, the remainder pale brown; male hypopyg- 

 ium with tergite pale, the saucer (Fig. 27, B) very short, without lateral 

 spines, the caudal border with a broad U-shaped notch ; inner dististyle 

 (Fig. 27, B) narrow, the apex simple canadensis 



Tipula (Vestiplex) arctica Citrt. 



1831. Tipula arctica Curtis; Ross's Voyage to the Arctic Regions, 



p. Ixxvii, pi. A, fig. 15. 

 1838. T. nodulicornis Zetterstedt ; Ins. Lapponica, Dipt., p. 841. 

 1848. T. glomerata AValker; List Dipt. Brit. Mus., 1:70. 



Figs.— Alexander, Kept. Can. Arctic Exped., 1913-18, III, C (Dipt.), figs. 10 

 (wing), 17 (antenna), 35 (hyp.), 40 (ovipositor); pi. 6 (ad. ?); 1919. 



General coloration, including abdomen of 2 bluish gray; abdomen 

 of $ with tergites more reddish yellow, trivittate with darker. Prae- 

 scutal interspaces with brown punctures. Wings with cell R clear 

 except for spot at origin of Rs. Male hypopygium with inner disti- 

 style a narrow arcuate rod, its apex simple. $ . L. 15-17 mm. ; w. 

 17-18 mm. 9. L. 21-23 mm.; w. 18-19 mm. 



Arctic portions of Eurasia and North America. (Arctic-Alpine). 



T. {T^es'fi/>?ea?) balioptera Lw. (Fig. 27, A). 



1863. Tipula halioptera Loew; Berlin. Ent. Zeitschr., 7 : 284. 



Figs.— Alexander, Cfls. N. Y., 1, pi. 46, fig. 227 (wing), pi. 50, fig. 279, pi. 54, 

 fig. ?>i7 (hyp.) ; 1919. Dickinson, Cfls. Wise, p. 234, fig. 146 (wing), p. 249, fig. 187 

 (hyp.) ; 1932. 



Readily told by the median spine of tergal saucer (Fig. 27, A). 

 Abdominal tergites brownish yellow, with a conspicuous median 

 brown stripe. $. L. 14-15 mm"!; w. 14-16.5 mm. 2 L. 20-22 mm.; 

 w. 16-17 mm. 



(Late June, July; Sept., Oct.) Subarctic North America. Ont., Que., Me., westw. 

 to Wise, and Alta. (Hudsonian). 



T. {Vestiplex) canadensis Lw. (Fig. 27, B). 



1864. Tipula canadensis Loew; Berlin. Ent. Zeitschr., 8:59. 



Fig.— Alexander, Cfls. N. Y., 1, pi. 50, fig. 281, pi. 54, fig. 341 (hyp.) ; 1919. 



Posterior border of tergal saucer of hypopygium (Fig. 27, B) 

 with numerous pale setae on either side of midline. $. L. 13-16 

 mm.; w. 14-16.5 mm. 



(June, July) Subarctic North America, southw. to Ont., Que., Labr., westw. to 

 Alta. (Hudsonian). 



T. {Vestiplex) caroliniana Alex. 



1916. Tipula caroliniana Alexander; Can. Ent., 48: 46-48. 



Fig.— Alexander, Cfls. N. Y., 1, pi. 50, fig. 286 (hyp.) ; 1919. 



