REVISION OF SPECIES OF STILOBEZZIA KIEFFER 33 



9. Wing length more than 2 mm; scutum, postscutellum, and abdomen dark 

 brown; male genitalia with bas'style quite elongated, mediangular process 

 not developed, but basidorsal process long and slender; dististyle quite 

 short; aedeagal sclerites bisinuate, slender with abrupt expansion on outer 

 margin at midlength; parameres each with detached long, slender, arcuate 

 basal lobe, main body long, moderately stout at base, slender distally and 

 abruptly bent distad to a sharp ventrally directed point. 



robusta, new species 



Wing length 1-2 mm; thorax pale brown to brown; spermathecae and male 



genitalia not as above 10 



10. Wing with several to many setae on radius; surface macrotrichia at apex 



of wing extending nearly to vein M 2 or behind; scutellum with 6 large 

 bristles; spermathecae ovoid without necks, slightly unequal, with hyaline 

 perforations; male genitalia with inconspicuous mediangular processes; 

 aedeagal sclerites with prominent caudomesal expansion; parameres each 

 with broad basal lobe, main body stout at base, slightly narrowed in 

 midportion, distally flattened and expanded in a platelike tip produced 



caudoventrad constans, new species 



Wing with 1 seta on radius, at base; surface macrotrichia at apex of wing 

 scarcely extend behind vein Mjj scutellum with 4 large bristles; sperma- 

 thecae and male genitalia not as above 11 



11. Lateral cluster of abdominal tergum I with 5 hairs; male genitalia without 



bridge between mediangular processes; dististyle stout to blunt tip; aedeagal 

 sclerites with inconspicuous caudomesal expansion; parameres each with 

 winglike basal lobe, and main body rather stout and short, gradually curved 

 ventrad toward apex with blunt-pointed tip . obesigenitalis, new species 

 Lateral cluster of abdominal tergum I with abundant hairs; male genitalia 

 with medial bridge, sclerotized at center, between mediangular processes; 

 aedeagal sclerites with prominent caudomesal expansion, their arch high; 

 parameres each with basal lobe expanded at tip, main body abruptly 

 narrowed toward tip, sharply bent ventrocephalad to a point. 



fortistyla, new species 



12. Wing with anterior veins, particularly radius and its branches, unusually 



thick, IRC and 2RC spaces small; setae abundant on radial vein and its 

 branches; macrotrichia present distally on veins M b M 2 , and M 3+4 and 

 in distal third of cells R 5 and M : , a few also in cells M 2 and M 4 ; spermathecae 

 ovoid, without necks or hyaline perforations; male genitalia with basistyle 

 elongated, dististyle almost straight to blunt tip; aedeagal sclerites with 

 poor caudomesal expansion, their arch rather high; parameres each with 

 main body poorly sclerotized, distally stouter with an oblique subapical 

 concavity bearing a short peg on lateral margin, the mesal margin produced 



into a filiform process crassivenosa, new species 



Wing with anterior veins prominent but not unusually thick; radial cell 

 spaces prominent with distal sector of Ri slightly shorter than r-m; few 

 setae on radius; macrotrichia sparser, usually not extending caudad of 

 vein M 2 and mostly close to apical margin; spermathecae and male genitalia 

 not as above ' 13 



13. Wing with more than 1 seta on radius; scutellum with 6 large bristles; sper- 



mathecae oval and unequal, without hyaline perforations; male genitalia 

 with basidorsal process prominent; aedeagal sclerites with prominent 

 caudomesal expansion, their arch high; parameres each with main body 

 long, straight, and stout parvitheca, new species 



