REVISION OF SPECIES OF STILOBEZZIA KIEFFER 



75 



Thorax: Dark brown, pleuron and scutellum pale yellow with 

 greenish patches; scutellum with 5 large bristles. 



Legs: As in traubi, new species, with the following differences: 

 tarsomere V with 8, 6, and 4 sharp-tipped spines plus a few stiff, 

 smaller spines on fore, mid, and hind legs respectively; long black 

 bristles on all tibiae, 2 on fore, 4 on mid, and 12 on hind legs, 7 of the 

 latter on extensor side of hind tibia; I— III with strong ventral spines 

 as: fore leg 0-0-1, 0-0-1, 0-0-2; mid leg 1-1-2, 0-0-2, 0-0-2; hind 

 leg 0-0-1, 0-0-1, 0-0-1. Hind leg with femur to IV lengths (V dam- 

 aged) as 100-110-50-20-10-5; TR 2.5; hind tibial comb with 6 spines. 



Wing (fig. 686): Grayish hyaline, the anterior veins brownish; 

 macrotrichia absent on surface; CR 0.81; r-m to stem lengths as 

 12:7; radius with several setae. Halter pale, knob slightly greenish. 



Figure 68. — Stilobezzia spinipes, new species (a-b, 9 ', c-e, cf). a, spermathecae; b, wing; 



c-e, <? genitalia. 



Abdomen: Pale laterally and ventrally, but terga greenish brown; 

 tergal setae as in traubi. Spermatheca (fig. 68a), 3, the 2 large nearly 

 equal (not measured, slides poor), the third about a fourth as large, 

 all subspherical, intensely sclerotized, with minute hyaline perfora- 

 tions, distinct slender necks present. 



Male. — Length of wing 1.33 mm. 



Similar to the female, with the usual sexual differences. Genitalia 

 (fig. 68c-e) as in traubi, with the following differences; Mediangular 

 process of basistyle more elongate, with blackish sclerotized, nearly 

 straight mesal point; dististyle with marked distal swelling, greatest 

 on outer margin, giving a humped appearance to outer margin, but 

 with a sharp-pointed tip; aedeagal sclerites bisinuate, slender, the 

 mesal third straight with short bent distal tip; parameres each with 

 lateral arm more curved than in traubi, the distal stem slender and 



