950 Charles Paul Alexander 



58. Wings with about four large dark browa blotches alon^; the radial vein, the second at 



the origin of the sector, the third at the stigma; wing apex narrowly light brown; 

 wing about 16.5 mm.; antennae bicolorous; head dark gray, with a narrow, impre.ssed, 

 median line; prescutum dull gray with four clearly defined bright brown stripc3; 

 abdomen dull yellow with three dark brown stripes; tergal valves of ovipositor acicular. 

 [Berl. Ent. Ztschr., vol. 8, p. 58. 1864.] (Plate XLVII, 233, wing.) 



T. macrolabis Loew 

 Wings not so colored 59 



59. Thorax with the prescutal stripes concolorous with the ground color of the thorax, 



the lateral stripes broadly margined in front and on the sides with dark brown; median 

 stripe broadly margined on the sides; wings with a variegated brown, gray, and white 



pattern [hebes group) 60 



Thorax not so colored 62 



60. Antennae bicolorous, at least basally. [Berl. Ent. Ztschr., vol. 7, p. 285. 1863.] 



(Plate XLVIII, 249, wing.) T. hebes Loew 



Antennae unicolorous 61 



61. Cell R'o of wings usually white or largely so; antennae shorter. [Berl. Ent. Ztschr., 



vol. 7, p. 281. 1863.] T. grata Loew 



Cell R., of wings infuscated except basally; antennae longer. [Berl. Ent. Ztschr, vol. 8, 

 p. 60. 1864.] T. latipennis Loew 



62. Wings with a pale gray and hyaline pattern; cell Sc uniformly dark brown; m-cu cross- 



vein close to the fork of M {marmorata group) 63 



Wings with the pattern darker gray and brown; if the pattern is pale, the cell Sc is not 

 dark brown and the m-cu cross-vein is not close to the fork of M {angustipennis 

 group) 64 



63. Stripes on the prescutum ending at the level of the pseudosutural foveae, the median 



pair blunt at their anterior ends. [Berl. Ent. Ztschr., vol. 7, p. 279. 1863.] (Plate 



XLVIII, 250, wing.) T. fragilis Loew 



Median stripes of the prescutum extending about to the anterior margin of the sclerite, 

 deeply bifid at their anterior ends. [Berl. Ent. Ztschr., vol. 7, p. 280. 1863.] 



T. ignobilis Loew 



64. Abdominal tergites dark slate gray, narrowly margined caudally with bright orange- 



yellow; length 24 mm.; wing 18 mm.; antennae dark brownish black thruout; head 

 dark gray with a narrow brown median stripe; prescutum brownish gray, the stripes 

 darker brown, not clear-cut; thoracic pleura clear gray; wing pattern heavy; a distinct 

 dark brown spot at the base of the wing. [Berl. Ent. Ztschr., vol. 8, p. 57. 1864.] 



T. ternaria Loew 

 Coloration not as above 65 



65. Valves of ovipositor short, about as long as the fifth tergite. [T. senega Alex., Insec. 



Inscit. Menst., vol. 3, p. 128, 1915. T. pallida Loew, preoccupied, Bed. Ent. Ztschr., 



vol. 7, p. 284, 1863.] (Plate XLV, 213, wing.) T. senega Alex. 



Valves of ovipositor elongate, acicular, much longer than the fifth tergite alone 66 



66. Abdomen orange, with three dark brownish black stripes; no basal gray ring on the 



abdominal tergites. [Berl. Ent. Ztschr., vol. 7, p. 286. 1863.] (Plate XLV, 212, 



wing.) T. angustipennis Loew 



Abdomen not so colored; a narrow basal ring on the abdominal tergites, grayish and 

 destitute of the scattered hairs found on the remainder of the segment 67 



67. Abdomen long and slender, indistinctly trivittate with brown, the stripes interrupted by 



the smooth basal areas of the segments. [Berl. Ent. Ztschr., vol. 7, p. 283. 1863.] 



T. serta Loew 

 Abdomen with the lateral stripes broad, continuous; lateral margins of the segments 

 broadly pale grayish. [T. ignota Alex., Insec. Inscit. Menst., vol. 3, p. 128, 1915. 

 T. discolor Loew, preoccupied, Berl. Ent. Ztschr., vol. 7, p. 282, 1863.] 



T. ignota Alex. 



