The Crane-Flies of New York — Part I 955 



100. Inner pleural appendage produced caudad into an elongate, subacute, pale, fleshy 



lobe 101 



Inner pleural appendage complex, consisting of a slender caudal lobe which is directed 

 bacTvward and pointed, and a cephalic lobe which is compressed, black, and heavily 

 chitinized along the margin; coloration yellowish; antennae bicolorous; head light 

 gray; thoracic stripes rather indistinct, brownish orange; ninth tergite (Plate LII, 

 312) with the lateral angles tipped with a cylindrical, conical point; median lobe 

 prominent, convex, rounded; eighth sternite large, prominent, projecting caudad, 

 the posterior margin with a rounded notch bearing a dense tuft of long, silvery hairs 

 on each side of the mid-line; wing of male 18-19 mm. [Proc. Acad. Nat. Sci. Phila., 

 p. 492-493, pi. 16, fig. 14. 1915.] (Plate LV, 347, lateral aspect of male hypo- 

 pygium.) T. monticola Alex. 



101. Antennal flagellum dark brown; body coloration light gray; ninth tergite with the 



lateral angles subangular, not approximated; median lolje not prominent, shiny; 

 thorax with three broad brown stripes; wing 12.5 mm. Southern species. [Insec. 



Inscit. Menst., vol. 3, p. 134-136. 1915.] T. catawba Alex. 



Antennal flagellum bicolorous; body coloration yellowish, the thoracic stripes indistinct; 

 ninth tergite (Plate LII, 313) with the acute lateral lobes approximated, the space 

 between narrow. [Journ. N. Y. Ent. Soc, vol. 9, p. 109. 1901.] 



T. translucida Doane 



102. Abdominal tergites 2 to 5 with a brown subbailil spot on the lateral margin; ninth 



tergite of male with a deep rectangular notch, the median area not convex; antennae 

 indistinctly bicolorous; thorax brownish yellow without distinct stripes; wing 12.6 mm. 

 Southern species. [Proc. Acad. Nat. Sci. Phila., p. 495-496, pi. 16, fig. 16. 1915.] 



(Plate LV, 34S, lateral aspect of male hypopygium.) T. seminole Alex. 



Abdominal tergites without a brown subbasal spot on the lateral margin; ninth tergite 

 of male (Plate LII, 311) with the lateral angles conspicuous, the apices bluntly rounded; 

 median area broad, highly convex to obtusely pointed, shiny chestnut brown to 

 yellow; antennae usually bicolorous; thorax light brownish yellow, the stripes a little 

 darker, pale brown; wing about 13 mm. [Insec. Inscit. Menst., vol. 3, p. 134-135. 

 1915.] T. georgiana Alex. 



103. Lobes of ovipositor blunt, unchitinized biconiis group 



Lobes of ovipositor pointed, chitinized .... Females of other species with unmarked wings 



No attempt is made here to separate the females of the species with unmarked 

 wings; many of the species have not been definitely associated with their mates and 

 are not really known. In all cases in which pairs of flies are taken in copula, the two 

 sexes should be pinned on the same pin, the male above. In many groups of the 

 genus it is quite impossible to separate the females on the characters known at 

 present. 



Since the above key was completed a few additional species of Tipula 

 have been described. These are briefly diagnosed here in order to com- 

 plete the data. 



Tipula aprilina Alex. (Alexander, 1918 a: 63-64.) 



Dejecta group; close to T. dejecta. Male hypopygium with the ninth tergite large, 

 the posterior margin with the lateral angles produced caudad into prominent blunt lobes 

 which are blackened and furnished with small tubercles, the caudal margin truncated; between 

 these lateral lobes two parallel, u.sually longer and slightly pointed, lobes which are 

 directed slightly ventrad, one on either side of the median line; outer pleural appendage 

 very small and inconspicuous, elongate-cylindrical, yellowish; inner pleural appendage 

 elongate, narrow; margins of ninth sternite not widely separated beneath, carinate, and with 

 a narrow V-shaped posterior notch bearing a pair of small, fleshy lobes. Wing of male, 

 11.5 mm. (Virginia, April.) 



