REVISION OF SPECIES OF STILOBEZZIA KIEFFER 39 



fine spines on fore and mid legs; I— III with strong ventral spines as 

 follows: fore leg 1-1-1, 0-0-1, 0-0-1; mid leg 1-1-2, 0-0-2, 0-0-2; 

 hind leg 1-0-1, 0-0-2, 0-0-2. Hind leg with lengths from femur to 

 V as 80-85-47-22-9-4-11; TR 2.2; hind tibial comb with 7 spines. 



Wing (fig. 486?): Faintly brownish, with 2 dark spots, 1 over r-m, 

 IRC and R 1; the other at tip of R4+5, and distal clouding in cell R 5 ; 

 veins darker brown except radius and proximal portion of media; 

 IRC clear, rhomboidal; CR 0.74, r-m to stem M lengths as 2:1; 

 radius with scattered setae; macro trichia present at wing margin 

 between R 4+5 and vein M 2 , a few in cell M 2 . Halter bark brown, base 

 of stem paler. 



Abdomen: Moderately slender, terga II-X almost totally dark 

 brown, but intermediate segments with pale anterior margins; terga 

 moderately setose, I with 14 setae on each side; setae in 2 uneven 

 rows on each tergum, longer laterally (fig. 48e). Spermathecae (fig. 

 48/) ovoid, with short necks, slightly unequal, measuring 0.053 mm 

 by 0.042 mm and 0.046 mm by 0.035 mm; rudimentary spermatheca 

 minute, tubular. Genital sclerotization as in figure 48a. 



Male. — Unknown. 



Distribution. — Thailand. 



Types. — Holotype female, Udonthani Prov., Meung Dist., Thai- 

 land, 17-20 June 1959, Manop R. collector, light trap (USNM 69449). 

 Paratypes, 5 females. THAILAND: Loei, Meung and Dan Sai Dists., 

 1-7 June 1959, Manop R., light trap, 4 females. Udonthani, Ampur 

 Muang, Sept. 1962, J. Scanlon, light trap, 1 female. 



Discussion. — Stilobezzia nebulosa Tokunaga from New Guinea 

 differs, according to the original description, in its larger size (wing 

 1.92 mm long), in lacking the distal infuscation in wing cell R 5 , the 

 "thorax is almost entirely black," and antennomeres III entirely dark, 

 IV-IX dark brown basally and gradually paler toward apical segments, 

 becoming pale brown. 



9. Stilobezzia (Neostilobezzia) venefica Das Gupta and Wirth, new species 



Figures 34, 49 



Female. — Length of wing 1.55 (1.50-1.67, n=10) mm; breadth 0.57 

 (0.54-0.62, n=10) mm. 



Head: Dark brown, III-X of antenna with broad bases pale, narrow 

 bases of XI-XV pale; vertex (fig. 49a) with 14 hairs. Antenna (fig. 34) 

 with lengths of III-XV as 14-9-10-11-11-11-12-12-23-25-23-22-28; 

 AR 1.34; palpal segments as 7-19-28-11-19; mandible with 7-8 teeth 

 (av. 7.6, n=13). 



Thorax: Uniformly dark brown, a blunt tubercle present on antero- 

 mesal margin of scutum, 2-3 stiff hairs at base of tubercle; scutellum 

 with 4 large and 4 small bristles. 



