58. 
59. 
60. 
61. 
62. 
63. 
64. 
65. 
ENTOMOLOGY 913 
Dorsum of thorax with well-marked, yellowish gray, longitudinal stripes. Wing more 
SHUKGLS Yaar, 2A er een gm Cet eg BN ag Mivalegt Oe It fay Rn ae er se Pe eee ing 
. Abdomen dark reddish brown, dorsally with a median row of small, grayish white, tri- 
angular spots and lateral rows of indistinct reddish spots. Fore femora reddish. 
GEC Uys co meOe cae iN: hae wie amas eT ratte sls Sov thy cewgtaa sea beaes T. claripes. 
Abdomen darker or paler reddish brown, dorsally with an indistinct, median, grayish 
white stripe broken up into small triangles; the sides without or with faintly indi- 
cated paler spots. Fore femora dark brown to black. Length, 16 to 22mm. 1’. secedens. 
Wing hyaline, at most slightly smoky along the costal margin...................0055 59. 
Wing distinctly smoky or infuseated, or darkened or spotted along some of the veins.. 62. 
First five abdominal tergites with conspicuous, median, white spots, very large and 
trapezoidal on the third to fifth; lateral spots also very distinct, forming large rectan- 
gular triangles. Frons about three times as long as wide, with large basal and median 
callosities, which are close together and broadly connected. Length, 9.5 to 12 mm. 
Ree Nh We eet tee eRe rE PAS sg Uva tele S at Oaks Gia Sona AR en TE etek ¢ T. lufirensts. 
Median and lateral dorsal spots of the abdomen smaller and less conspicuous; the lateral 
spots not forming rectangular triangles. Frons four to six times as long as wide... 60. 
Frons five to six times as long as wide. Wing rather distinctly smoky along the costal 
margin, the stigma much of the same color. Legs almost uniformly pale reddish 
Dru en euie 7 TOL co IMs a Bese w Semi Sd ek et oe alee algae T. ustus var. disjunctus. 
Frons four to five times as long as wide. Wing nearly hyaline with distinct yellowish 
UTICA SUR (Spee el RS «aera tt a ee Ae A RE ng ne oe ae OE To 61. 
Median spots of the abdominal tergites trapezoidal, truncate anteriorly and with straight 
sides. Antennae reddish yellow, infuscated toward the apex. Femora generally 
much darker than the tibiae. Length, 14 to 19 mm...................... T. socius. 
Median spots of the abdominal tergites triangular, pointed anteriorly and with concavely 
curved sides. Antennae mostly blackish brown. Femora colored like the tibiae or 
shencordearker, eneth, WtoUS mini 6. flies ena Dave ens vows a T. sagittarius. 
Frons four to five times as long as wide; the median callus broadly spindle-shaped..... . 63. 
Frons five and one-half to seven times as long as wide, the median callus linear or 
Bee ume NM Le Cnraee iae rea BROAN IEA Or enn ceie Seta sit aio Wee whem eaten thee 65. 
Wing with distinct smoky spots along the second longitudinal and transverse veins; 
otherwise nearly hyaline. Abdomen reddish brown, darker at apex; first tergite with 
a dark, postscutellar spot; second to fourth tergites with a large, triangular, median 
spot, straight along the sides; no distinct lateral spots, but paler side stripes. Antennae 
dark reddish brown. Length: 17 to. 1S atte... 5. ce ses coe cs eee a te T. fraternus. 
Wing uniformly and slightly smoky throughout, without spots. Second to fifth tergites 
each with a median, pale triangle and distinct yellowish gray, lateral spots........ 64. 
Dorsum of thorax with four yellowish white, longitudinal stripes (two in the middle and 
one above the base of each wing). Antennae bright yellowish red, with darker apex. 
WieriierOnl a Mero cet IMIG Bsns slat testrwane cine soem iM s cae hie sal eA ese ah T. quadrisignatus. 
Dorsum of thorax with five, very distinct, longitudinal, pale stripes. Antennae reddish 
wellow with darker apex. Length, 155 mines. 2.40000. hvu ou as os os T. distinctus. 
Abdomen with a conspicuous series of large, broadly truncate, gray triangles on the middle 
of the second to fifth tergites, which in addition bear oval, gray, much less conspicu- 
ous, lateral spots not connected with the median triangles. Wing dark brown at the 
base and along the costal border and suffused with brown along some of the veins. 
Dorsum of thorax with five longitudinal, pale stripes. Legs dull ferruginous; the 
fore femora, tips of fore tibiae, and all tarsi brownish black. Length, 17 to 21 mm. 
ratte NIL). Pile Sar CEN GOIEEe Dnie SAME AME MOEA ahead Sb kt Ia Nake T. denshamii. 
Median triangles of the tergites not strikingly more conspicuous than the lateral spots. 
Wing ae a.male More wniOrmby IMLURCAICO. ic see cs yess siesta ssavnssencueans 66. 
. Dorsum of the abdomen with three rows of grayish white triangles; those of each tergite 
broadly connected along the hind margin. Legs reddish brown. Wing more strongly 
brownish along the anterior margin and in the stigma. Length, 20 to22mm. T. nyasae. 
Dorsum of abdomen with three rows of grayish white or yellowish triangles; the triangles 
of each tergite not or very narrowly connected along the hind margin. Wing more 
URCHIN CAReU Rteg keene vas Ree eehoee Siew te dew in ik Eevee cy soy ta hunks 67. 
