92 U.S. NATIONAL MUSEUM BULLETIN 283 



Male. — Length of wing 1.41 (1.30-1.49, n=9) mm. 



Similar to the female with the usual sexual differences; mesal dark 

 spots absent on terga II as well as III (fig. 75/). Genitalia (fig. 75 b-d) 

 similar to those of notata, tergum IX elongate and distal portion of 

 basistyle fairly long and slender; dististyle as long as basistyle, not 

 narrowed in midportion, distal point usually more heavily sclerotized 

 than proximal portion; aedeagal sclerite and paramere subequal in 

 lengths, the aedeagal sclerite slightly stouter distad, both with paler 

 apices slightly bent ventromesally. 



Distribution. — Malaya; Thailand. 



Types. — Holotype male, allotype female, Kuala Lumpur, Selangor, 

 Malaya, Aug.-Sept. 1958, R. Traub, light trap (USNM 69472). Para- 

 types, 8 males, 4 females, same data except 1 male, April 1960, A. A. 

 Hubert, collector. 



Additional specimens. — 8 males, 7 females (alcohol). MALAYA: 

 Selangor, Kuala Lumpur, July-Aug. 1958, R. Traub, light trap, 6 

 males, 7 females. THAILAND: Chiang Mai, Apr.-May 1958, V. 

 Notananda, light trap, 1 male. Pechaburi, Dec. 1958, Manop R., light 

 trap, 1 male. 



Discussion. — This species is closely related to notata, from which it 

 differs essentially in its larger size, having the halter knob whitish 

 apically, the abdomen more petiolate, the male lacking the dark mesal 

 spot on abdominal tergum II, the female spermatheca colorless, the 

 male aedeagal sclerite slenderer, and paramere with shorter distal bent 

 point. 



36. Stilobezzia (Stilobezzia) spinitarsis Das Gupta and Wirth, new species 



Figures 8, 76 



Female. — Length of wing 1.38 (1.34-1.42, n=2) mm; breadth 

 0.51 mm. 



Head: Vertex with 10 hairs. Antenna (fig. 8) with III-XV lengths 

 as 14-9-9-9-10-10-10-10-22-22-24-25-38; AR 1.62; IX and X sub- 

 equal. Palpal segments as 6-15-21-13-25; III unusually short, without 

 distinct pit. Mandible with 6-8 teeth. 



Thorax: Color pattern as in notata; scutellum with 5-6 bristles. 



Legs: Color pattern as in notata, but much less intense; hind femur 

 dark nearly to base, but with faint intensity; tarsomeres IV and V 

 pale; V with ventral batonnets on all legs, including the hind pair; 

 claws as in notata; hind leg with lengths from femur to V as 86-83-43- 

 22-6-5-15; TR 2.0; hind tibial comb with 9-11 spines. 



Wing (fig. 76a) : Color pattern as in notata; CR 0.72; IRC to 2RC 

 lengths as 8:25; r-m to stem M lengths as 9:29. Halter with pale 

 stem, knob brown, but distal third whitish. 



