The Crane-Flies of New York — Part I 947 



Ninth tergite (Plate LI, 296) not square across the caudal margin; the sharp median 

 tooth subtended on either side by a flattened divergent lobe; apex of the ninth pleurite 

 rounded and blunt, not toothed (Plate LIII, 323). Western North America. [Can. 

 Ent., vol. ,50, p. 69-70. 191S.J T. macrolaboides Alex. 



35. Wings with the apex narrowly and irregularly darkened; narrow brown seams along 



the cord; antennae dark brown thruout; prescutum gray, with darker gray stripes 

 which are narrowly margined with dark brown; pleura clear light gray; male 

 hypopygium with the ninth tergite large (Plate LI, 30()), the caudal margin produced 

 into two short, parallel lobes, one on either side of the median line. [T. iroquois 

 Alex., Insec. Inscit. Menst., vol. 3, p. 128, 1915. T. cincta Loew, preoccupied, Berl. 

 Ent. Ztschr., vol. 7, p. 288, 1863.] (Plate XLVIII, 252, wing; Plate LIV, 344, lateral 



aspect of male hypopygium.) T. iroquois Alex. 



Wings not colored as above 36 



36. Wing apex infuscated; a dark spot at the origin of the sector; male hypopygium with 



the ninth tergite (Plate LII, 317) prominent, deeply notched, the lateral lobes acute; 

 medium-sized, wing 18 mm. or less; antennae bicolorous. [Berl. Ent. Ztschr., vol. 7, 



p. 288. 1863.] (Plate XLVII, 239, wing.) T. submaculata Loew 



Not as above; if the wing pattern is as described (valida group), the size is much larger — 

 wing of male 20 mm 37 



37. Large, wing of male 20 mm.; wings with the apices light or dark brownish gray; male 



hypopygium greatly enlarged {valida group) 38 



Smaller, wing of male under 18 mm.; wings with a heavy brown and white or grayish 

 brown and white pattern 39 



38. Ninth tergite (Plate LI, 303) with the lateral lobes more slender and pronounced; eighth 



sternite without a long brush of hairs: wing apex darker, brownish. [Berl. Ent. 

 Ztschr., vol. 7, p. 287. 1863.] (Plate XLVII, 237, wing; the reproduction of the 



figure is much too dark.) T. valida Loew 



Ninth tergite (Plate LI, 304) with the lateral lobes shorter and less evident; eighth 

 sternite with a tuft of long yellow hairs; wing apex light gray, scarcely darker than the 

 basal part of the wing. [Journ. N. Y. Ent. Soc, vol. 9, p. 113. 1901.] (Plate LIV, 

 345, lateral aspect of male hypopygium.) T. hirsuta Doane 



39. Ninth tergite of the male with a dorsal black chitinized projection lying transversely at 



about midlength of the sclerite (in T. longiventris and others) ; remainder of the sclerite 



not chitinized 40 



Ninth tergite of the male not chitinized, or else variously chitinized, either on the caudal 

 margin, on the lateral margins, or with a conical tooth on the dorsal surface — in 

 which case {T. balioptera) the cephaHc and lateral margins are heavily chitinized 

 and toothed 41 



40. Antennae bicolorous, the basal swelling of the flagellar segments black, the pedicels 



yellow; prescutum fawn-colored, with four light gray stripes partly margined with 

 dark brown; prescutal interspaces with abundant brown dots; lateral margins of the 

 abdominal segments broadly pale grayish silvery; male hypopygium with the ninth 

 tergite (Plate L, 285) having the lateral lobes rounded, the median caudal notch 

 indistinct. [Berl. Ent. Ztschr., vol. 7, p. 278. 1863.] (Plate XLVI, 229, wing.) 



T. longiventris Loew 



Antennae unicolorous, the flagellar segments nearly uniform thruout; prescutum dull 



gray, with four dark brown stripes; lateral margins of the abdominal segments narrowly 



silvery; male hypopygium with the ninth tergite (Plate L, 286) having a deep 



U-shaped notch on the caudal margin. [Can. Ent., vol. 48, p. 46-48. 1916.] 



T. caroliniana Alex. 



41. Ninth tergite small, the caudal margin evenly rounded by a broad concavity which is 



very heavily chitinized; flagellar segments of antennae very deeply incised beneath, 



producing a serrated appearance 42 



Ninth tergite not as above 43 



