REVISION OF SPECIES OF STILOBEZZIA KIEFFER 65 



0-0-1, 0-0-1, 0-0-2; mid leg 0-0-2, 0-0-2, 0-0-2; hind leg none; 

 hind TR 2.0; hind tibial comb with 6 spines. 



Wing (fig. 64a): Pale brownish, anterior veins not prominent; 

 CR 0.74; r-m to stem M lengths as 5:7; proximal section of radius 

 with 1 seta at base; macro trichia scattered along wing margin between 

 2RC and vein M 2 . Halter pale brownish. 



Abdomen (fig. 646): Pale brownish; tergum I with 11-12 hairs on 

 each side; II and behind each with sparse row of hairs on posterior 

 margin and on each side margin. Genitalia (fig. 64c-e) with sternum 

 IX bearing shallow, wide caudomedian excavation, the ventral 

 membrane distinctly spiculate; tergum IX moderately long, tapering 

 to rounded apex, the pubescent submedian lobes moderately con- 

 spicuous; basistyle moderately broad, tapering distally, with incon- 

 spicuous mediangular process; dististyle long and slender, only slightly 

 curved; aedeagal sclerites bisinuate, slightly expanded on outer margin 

 just proximad of middle, the caudomedian tip sharp pointed; a pair 

 of thinly sclerotized submedian lobes from caudal margin of aedeagal 

 sclerites; parameres each with detached basal sclerite bearing anterior 

 and lateral points, main body with basal knob tapering anteriorly, 

 caudal portion stout and strongly curved, expanded in midlength and 

 tapering distally to sharp point directed ventromesad. 



Distribution. — Malaya. 



Type.— Holotype male, Mt. Brinchang, 5000-6000 ft., Pahang, 

 Malaya, March 1963, H. E. McClure, light trap (USNM 69465). 



Discussion. — Stilobezzia alba Tokunaga from Japan and the 

 Ryukyu Islands is similar, but is a much paler species without brown- 

 ish scutum, the male parameres taper gradually from the base of the 

 main body, and the apices of the parameres are finely serrulate. 

 Stilobezzia simulator de Meillon from Liberia and cereola Clastrier from 

 Europe also must be closely related, since the male genitalia closely 

 resemble those of alba and subalba, especially in the distinctive 

 shapes of the parameres. 



25. Stilobezzia (Neostilobezzia) xanthogaster Das Gupta and Wirth, 



new species 



Figures 25, 65 



Female.— Length of wing 0.95 (0.92-1.02, n=10) mm; breadth 

 0.36 mm. 



Head: Pale brownish, narrow bases of antennomeres whitish; tori 

 dark brown. Eyes nearly contiguous (fig. 65a), vertex with 10 hairs. 

 Antenna (fig. 25) with III-X elliptical without preapical collar, 

 XI-XV elongate; III-XV with lengths as 8-5-5-5-5-5-6-6-14-14-14- 

 14-20; AR 1.69; XV without apical seta. Palpal segments (fig. 656) 



