428 Pomona Collegic Journal ok Entomology 



FF. Body normally large : w iiigs normal. Dorsal plate of female quite 



acute apically. T. salicis Mally. 



EE. Facial cones quite distinctly conical in shape, but only slightly 



divergent. T. nigrifroiis Crawf. 



DD. 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, T. fulz'ida siiiiilis Crawf. 



EE. Anal valve not simple, 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. T. aurantiaca Crawf. 



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



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



T. nigra Crawf. 

 .\A. 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. \'ertex and notum conspicuously pubescent. 



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

 Pronotum short. \\'ings large ; second marginal cell unusually large. 

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

 shaped. T. diospyri Ashm. 



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

 erately long. Pronotum (|nite long. \\'ings not large; marginal 

 cells stibequal. Anal valve of male small. T. hakeri Crawf. 



CC. \'ertex and notum not conspicuously pubescent. 

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

 .\nal valve not spatulate. 

 E. Dorsal and ventral plates equally long. r|uite stout, and not acute at 

 apex. \'crtcx conspicuously impressed discally. 

 F. .Abdomen uliite vonlrad. Facial cones very slender and acute. 



T. siiiiiUs Crawf. 

 FF. .Midomcn unicolorod. Facial cones not very slender. 



T. siiiiilis forcalis Crawf. 

 EE. Dorsal ])latc distinctly longer ancl less acute than ventral. A'crtcx 

 scarcely impressed discally. 

 F. \'eins of wing set with double row of sct.T. Anal valve straight on 

 anterior margin, roundly lobatc posteriorly ; claspers large, not 

 acute at apex. 

 G. Set;c on veins quite prominent; wing somewhat fulvous; punctur;il 

 dots on wing membrane conspicuous. Bodv large, robust. 



T. mexicana Crawf. 



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