116 U.S. NATIONAL MUSEUM BULLETIN 2 83 



and broad subbasal band and extreme tip of hind tibia, moderately 

 dark brownish. Wing unmarked, slightly darker brownish anteriorly; 

 halter moderately dark brownish. Vertex (fig. 856) with 8 hairs. 

 Antenna (fig. 22) with III-XV lengths as 16-9-9-8-8-8-8-9-22-18- 

 19-20-32; AR 1.48; palpal segments as 4-10-18-9-13; mandible 

 with 7 teeth. Tarsomeres I— III with stout ventral spines as: none on 

 fore and hind legs, mid leg 0-0-1, 0-0-1, 0-0-2; each lobe of tarso- 

 mere IV with 2 stout spines on all legs; V (fig. 85/) with sharp-tipped 

 batonnets on all legs. Hind leg with lengths from femur to V as 78- 

 74-33-17-6-4-10; TR 1.94; hind tibial comb with 9 spines. Wing 

 (fig. 85e) with costa extending to 0.76 of wing length; r-m to stem M 

 lengths as 1:4; alula fringe lacking. Abdomen (fig. 85d) with te gum 

 I and much of II pale; setae sparse and scattered, absent from an- 

 terolateral corners of II-IV. Spermatheca (fig. 85c) 1, short oval with 

 distinct slender sclerotized neck, measuring 0.095 mm by 0.070 mm. 



Male. — Unknown. 



Type. — Holotype female, Kuala Lumpur, Selangor, Malaya, Apr. 

 1959, H. E. McClure, light trap (USNM, 69478). 



Discussion. — This is one of the palest members of the Subviridis 

 Group; it differs from tenuicolorata, new species, in leg markings and 

 many structural characters, especially the presence of spines on 

 tarsomere IV and batonnets on V on all legs, the absence of alular 

 fringe, the oval spermatheca, and the sparse abdominal setae. 



44. Stilobezzia (Stilobezzia) isthmoslheca Das Gupta and Wirth, new species 



Figures 23, 86 



Female. — Length of wing 1.03 mm; breadth 0.40 mm. 



Head: Eyes (fig. 86a) narrowly separated; vertex with 8 hairs. 

 Antenna (fig. 23) short; III-X pale, dark beyond the subapical collar; 

 XI-XV dark; lengths of III-XV as 18-7-7-7-7-7-7-8-14-14-15-16-24; 

 AR 1.22. Palpal segments as 4-12-18-9-16; III slender, without pit 

 but with 2-5 long sensilla. Mandible with 6-7 teeth. 



Thorax: Intensely dark brown dorsally, pleuron pale except brown 

 above mid and hind coxae; scutellum with 5 bristles. 



Legs (fig. 866) : Yellowish, faint brownish areas on broad midportion 

 of hind femur, on distal half of mid femur, and on proximal half of mid 

 tibia; legs rather stout, especially the hind pair. Stout, dark ventral 

 spines on tarsomeres I— III as: none on fore and hind legs, 1-0-2, 

 0-0-2, 0-0-2 on mid legs; IV with slender distal spines on mid leg only; 

 V (fig. 86c) with stout subbasal batonnets on fore and mid legs, none 

 on hind leg. Hind leg with lengths from femur to V as 69-65-33-13-6- 

 4-12; TR 2.38; hind tibial comb with 9 spines (8-9, n=6). 



