428 Pomona Collkci; Journal of Entomology 



FF. Body nonnally large; wings normal. Dorsal plate of female quite 



acute apically. 7'. salicis Mally. 



EE. Facial cones (|uite distinctly conical in shape, but only slightly 



divergent. T. iiigrifrons Crawf. 



1)D. Facial cones distinctly divergent, conical in shape, and quite long. 



E. Anal valve of male simple, small, convergent to apex ; claspers very 



small. 



F. Wings fulvous. T. fulvida Crawf. 



FF. Wings clear. 7'. fulvida similis Crawf. 



EE. Anal valve not simjilc, rather large, with a posterior lobe. 



F. Posterior lobe of anal valve quite large, reaching beyond base of 



claspers. Dorsal plate of female subacute and curved down in 



apical half. 7". aurantiaca Crawf. 



FF. Posterior lobe of anal valve small, short, scarcely more than an 



epiphysis. Dorsal plate of female not curved down as above. 



T. nigra Crawf. 

 AA. Genital segment of female not short, distinctly longer than preceding 

 ventral sclerite ; usually more than twice as long. 

 B. Female without long, slender, acute, .style-like ovipositor sheath ; genital 

 segment only moderately long. 

 C. Vertex and notum consjiicuously pubescent. 



D. Pubescence long, quite dense: vertex bulging; facial cones very short. 

 Pronotum short. Wings large ; second marginal cell unusually large. 

 Anal valve of male about as large as ventral plate and similarly 

 shaped. T. diospyri Ashni. 



DD. Pubescence not long, puh-erulent ; vertex flat. Facial cones mod- 

 erately long. Pronotum quite long. Wings not large ; marginal 

 cells subequal. .\nal valve of male small. T. bakcri Crawf. 



CC. Vertex and notum not conspicuously pubescent. 

 D. Genital segment of female aliout as long as wide dorso-ventrally. 

 Anal valve not spatulate. 

 E. Dorsal and ventral plates equally long, quite stout, and not acute at 

 apex. Vertex conspicuously impressed discally. 

 F. Abdomen white ventrad. Facial cones very slender and acute. 



T. siiiiilis Crawf. 

 FF. Abdomen unicolored. Facial cones not very slender. 



T. siiiiilis fo-i'calis Crawf. 

 EE. Dorsal plate distinctly longer and less acute than ventral. Vertex 

 scarcely impressed discally. 

 F. Veins of wing set with double row of set??. .\nal valve straight on 

 anterior margin, roundly lobate posteriorly ; claspers large, not 

 acute at apex. 

 G. Setre on veins Muite prominent; wing somewhat fulvous; ]nnictnr;d 

 dots on wing membrane conspicuous. Body large, robust. 



T. mexicana Crawf. 



