The Crane-Flies ok New York — Part I 919 



33. Large species, wing of male over mm.; male with the pleural appendage of the 



hypopygium pectinated. (Subgenus Prionolahis O. S.) 34 



Smaller species, wing of male under 8..5 mm.; male with the pleural appendage of the 

 hvpopvgium not pectinated, rather sharply pointed. [Journ. N. Y. Ent. Soc, vol. 24, 

 p.' 121-122, pi. S, fig. 5. 1916.1 (T'late XL, 146.) L. terebrans Alex. 



34. Large, wing of male about 13 mm.; costal and subcostal cells of the wings rich yellow; 



stigma dark brown; bases of femora bright yellow; anterior apical appendage of male 

 hvpopygium bifurcate. [Proc. Acad. Nat. Sci. Phila., p. 239, pi. 4, figs. 27, 27a, 27b. 



1859.] ' (Plate XL, 142.) L. rufibasis O. S. 



Smaller, wing of male about 11.5 mm.; wings uniform light yellowish gray; stigma rather 

 indistinct, gravish; bases of femora brownish yellow; anterior apical appendage of male 

 hypopygium simple. [Psyche, vol. 18, p. 198-199, pi. 16, fig. 10. 1911.] (Plate 

 XL, 143.) L. simplex Ale.x. 



35. Rs elongated and spurred at its origin; antennae of male elongated. [Mon. Dipt. N. 



Amer., part 4, p. 207. 1869.] (Plate XXXVIII, 116.) L. voetica O. S. 



Rs usually shorter, if elongated not spurred at origin; antennae of male short except 

 in L. laricicola 36 



36. R2+3 elongated, more or less arcuated, longer than the basal deflection of Ciu 37 



Ri+z not conspicuously arcuated, short, little if any longer than the basal deflection 



of Cih ' 38 



37. Rs and R2+3 strongly arcuated; cell 1st M2 very broad; antennae of male short. [Proc. 



Acad. Nat. Sci. Phila., p. 236. 18.59.] (Plate XXXVIII, 126.) L. toxoneura 0. S. 



Rs almost straight; R2+3 feebly arcuated but elongate; cell 1st Mi narrow; antennae 

 of male elongated. [Psyche, vol. 19, p. 167, pi. 13, fig. 4. 1912.] (Plate XXXVIII, 

 120.) L. laricicola Alex. 



38. Coloration gray; wings with the base strongly yellow, this including Sc for its entire 



length; hind legs with the apical third of femora dark brown, fore femora with the 

 apical two-thirds dark brown; Rs rather elongate and somewhat angulated at its 

 origin. [Phylidorea subcostata Alex. Can. Ent., vol. 43, p. 288-289. 1911.] (Plate 



XL, 149.) L. subcostata (Alex.) 



Coloration not gray; wings with the base not strongly yellow; legs with the femora 

 yellow, the tips narrowly brown 39 



39. Coloration yellowish brown; tuberculate pits distinct; Rs nearly .straight; antennae of 



male moniliform. [Mon. Dipt. N. Amer., part 4, p. 220. 1860.] L. fratria O. S. 



Coloration yellow to reddish yellow; tuberculate pits not evident; Rs short, strongly 

 arcuated; antennae of male not moniliform. (Subgenus Phi/lidnrea Bigot.) 40 



40. Large species, wing of male 9.5 mm.; abdomen of male without a black subterminal 



annulus. [Journ. N. Y. Ent. Soc, vol. 8, p. 191. 1900.) (Plate XXXIX, 132.) 



L. I idea Doane 



Smaller species, wing of male less than 7.5 mm. ; abdomen of male with a black subterminal 



annulus. [Proc. Acad. Nat. Sci. Phila., p. 594, pi. 25, fig. 4. 1914.] (Plate XXXIX, 



131.) L. novae-anqUae Alex. 



41. Cell Rz of the wings broadly sessile. [Proc. Acad. Nat. Sci. Phila., p. 597, pi. '27, fig. 28. 



1914.] (Plate XL, 151.) L. emmelina Alex. 



Cell Ri of the wings petiolate 42 



42. Bases of cells R3 and 1st M-i conspicuously nearer the wing root than cell Ri,\ petiole 



of cell /?2 less than half the length of vein R^; vein Rz not short, oblique; veins issuing 



from cell 1st M2 about twice the length of the cell 43 



Bases of cells R3, Ro, and 1st Mz about on a level; petiole of cell Ri more than half the 

 length of vein Ri; vein R-z short, oblique; veins issuing from cell 1st M-i about equal 

 to or a little longer than the cell, if longer (as in L. edwardi) not twice this length .... 44 



43. Prescutal stripes not well-defined; tuberculate pits present; r far removed from the 



tip of Ri] basal deflection of Cu\ usually at from one-third to one-half the length of 

 the cell Ut Mi. (Subgenus Pseudolimnophila Alex.) [Psyche, vol. 18, p. 196-198, 

 pi. 16, fig. 3. 1911.] (Plate XL, 150.) L. novebwacensis Alex. 



