The Crane-Flies of New York — Part I 943 



3. Coloration bright shiny yellow, reddish, and black; vertex shiny, with a black spot 



along the inner margin of each eye and a linear dark brown median area; thorax yellow 

 with three shiny reddish stripes, the middle one narrowly divided; male antennae 

 very short, not attaining the wing base; pubescence of the wings confined to cell R^,; 

 male hypopygium with the ninth sternite produced caudad in two powerful tooth-like 

 lobes. [Pachyrrhina unifasciata Loew. Berl. Ent. Ztschr., vol. 7, p. 294. 1863.] 

 (Plate XLIV, 206, wing; Plate XLIX, 262, ninth tergite.) (Subgenus Odontotipula 



Alex.) T. unifasciata (Loew) 



Coloration dull brown and yellow; vertex opaque without black marks; prescutum 

 dull, dark-colored with paler stripes, the median one at least well indicated; male 

 antennae elongate, reaching about to the base of the abdomen; pubescence of the 

 wings more extensive, from coll /?.i to M>. (Subgenus Cinctolipula Alex.) 4 



4. Antennae with the flagellum bicolorous, the basal swelling of each segment black, the 



elongate pedicel dull yellow; abdomen without distinct crossbands to the segments. 

 [Pachyrrhina unimaculata Loew. Berl. Ent. Ztschr., vol. 8, p. 64. 1864.] (Plate 



XLIII, 196, wing; Plate XLIX, 259, ninth tergite.) T. unimaculata (Loew) 



Antennae with the flagellum unicolorous; abdomen with the caudal half of the segments 

 dark brown, the basal half more yellowish producing a banded appearance. [Proc. 

 Acad. Nat. Sci. Phila., p. 469-471, pi. 16, fig. 2. 1915.] (Plate XLIII, 197, wing; 

 Plate XLIX, 260, ninth tergite; Plate LIII, 324, eighth sternite.) . . T. algonquin Alex. 



5. Coloration as in Nephrotoma — shiny, contrasting blacks, yellows, and reddish brownfe. .6 

 Coloration dull brown, gray, or blackish, not at all shiny 8 



6. Head with a linear black median mark extending from between the antennal bases to 



the occiput, sides of the abdomen without patches of light silvery gray; female ovipositor, 

 elongate, pointed, the valves chitinized. [Proc. Acad. Nat. Sci. Phila., p. 471-472. 

 pi. 16, fig. 3. 1915.] (Plate XLIV, 209, wing.) T. pachyrhinoides Alex- 

 Head without a black median line; sides of the abdomen with patches of light silvery, 

 gray pruinosity; female ovipositor very blunt, truncate, the valves not chitinized, 

 simulating the hypopygium of the male {collaris group) 7 



7. Head orange-yellow, the occiput with a grayish black spot; prescutum orange-yellow 



with three dull gray-black stripes; posterior margin of the postnotum, and the apical 

 half of the first abdominal segment, light gray. [Journ. Acad. Nat. Sci. Phila., vol. 3, 



p. 25. 1823.] (Plate XLIV, 207, wing.) T. collaris Say 



Head orange-yellow, with a large brownish orange spot on each side of the vertex touching 

 the inner margin of the eye; prescutum shiny, light honey-yellow, with three shiny 

 jet-black or reddish black stripes; posterior margin of the postnotum, and the apical 

 half of the first abdominal segment, not light gray; wings yellowish, the cord and 

 the apex narrowly seamed with brown. {Pachyrrhina nobilis Loew. Berl. Ent. 

 Ztschr., vol. 8, p. 62. 1864.] (Plate XLIV, 208, wing; Plate XLIX, 261, ninth tergite.) 



T. nobilis (Loew) 



8. Wings striped or streaked longitudinally with brown or reddish brown, this including 



the costal region and along Cu; cell M usually hyaline or nearly so; male hypopygium 

 with the sclerites of the ninth segment fused into a continuous ring {tricolor 



group) 9 



Wings not striped nor streaked as above, the costal margin in some cases darkened 

 but if so with no brown seams on the other veins 14 



9. Wings with cell R^ hyaline or nearly so, at least on its apical half, thus being continuous 



or nearly so with the area in cell M 10 



Wings with cell Ri infuscated, concolorous mth cells Ri and Mi 13 



10. Large species, wing of male over 20 mm.; base of cell R-, darkened 11 



Smaller species, wing of male under 18 mm. ; cell Rb hyaline 12 



11. Large, wing of male 25 mm., and darker-colored; prescutal stripes heaxaly margined 



with dark brown; antennae short, not attaining the wing base, dark brown thruout; 

 abdominal tergites with a dark brown sublateral stripe; wings with the pattern clear- 

 cut, a bright yellow spot in cell 1st Ri; cells Mi, Mi, Mi, and C'ui infuscated; male 



