42 U.S. NATIONAL MUSEUM BULLETIN 283 



(fig. 50c-e) with sternum IX narrow, caudomedian excavation very 

 slight, ventral spiculation inconspicuous; tergum IX long, tapering to 

 narrow rounded, slightly bilobed apex, pubescent caudal lobes not 

 greatly developed; basistyle rather long, tapering distally, mediangular 

 process small, blunt tipped; dististyle long, slender, slightly curved, 

 tip pointed; aedeagal sclerites slender at each end, outer margin with 

 broad angulate swelling at midlength, distomedian points sharp; 

 parameres each with rather narrow, detached lateral lobe from base, 

 main portion long and slender, slightly enlarged toward base, straight 

 for most of its length and tapering to abruptly bent slender tip. 



Distribution. — Thailand. 



Type. — Holotype male, Udrontani Prov., Pen Dist., Thailand, 

 23-24 June 1959, Manop R., light trap (USNM 69451). 



Discussion. — This species is similar to Jusciscutellata Tokunaga 

 and Murachi and longistyla Tokunaga from Micronesia in general 

 appearance and structure of the male genitalia but can be distinguished 

 as follows: S. fusciscutellata (from examination of the holotype male) 

 is characterized by more highly setose abdominal terga, scutellum 

 with 7 large bristles, coxae with highly spinose inner tubercle on sub- 

 basal region; parameres with basal lobe broad, distally bent ventro- 

 cephalad just beyond middle where there is a distinct sclerotized 

 bridge between them. S. longistyla, according to the original description, 

 may be distinguished by brownish halter; Y-shaped basal lobe of 

 paramere, aedeagal sclerite without angulate outer expansion on mid- 

 portion, and much shorter, broader basistyle. 



11. Stilobezzia (Neostilobezzia) constans Das Gupta and Wirth, new species 



Figures 31, 51 



Female. — Length of wing 1.26 mm; breadth 0.51 mm. 



Head: Yellowish brown; eyes narrowly separated, vertex (fig. 51a) 

 with 16 hairs. Antenna (fig. 31) pale brownish, narrow bases of anten- 

 nomeres pale; III-XV lengths as 14-9-9-9-9-9-9-10-15-15-17-17-21 ; 

 AR 1 .09 ; III-X subcylindrical ; XV tipped by a stiff hair. Palpal seg- 

 ments (fig. 51b) not measured, III slender with a distinct sensory pit, 

 I with a hair. Mandible with 8 teeth. 



Thorax: Pale brownish, midportion of pleuron yellowish; scutellum 

 slightly paler brown, with 4-6 large bristles. 



Legs: Yellowish, joints brownish, extremities of femora and tibiae 

 slightly darker; hairs on femora and tibiae seriate and rather con- 

 spicuous; claws long (fig. 51c); strong ventral spines on tarsomeres 

 I-III as: fore leg 0-0-1, 0-0-1, 0-0-2; mid leg 1-0-2, 0-0-2, 0-0-2; 

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

 as 87-83^0-21-8-5-12; TR 1.91; hind tibial comb with 7 spines. 



