REVISION OF SPECIES OF STILOBEZZIA KIEFFER 35 



Speculae Group 



Diagnostic characters (fig. 47). — Large, dark species of Neo- 

 stilobezzia with broadly banded legs and wings with obscure color 

 pattern consisting mainly of dark areas over IRC, tip of RS, and 

 distally in cell R 5 . Eyes narrowly separated, a seta located just below 

 the interocular bridge. Antenna long and slender, most antennomeres 

 strongly bicolored; III-X with distinct distal constriction; XV with 

 terminal seta. Palpal segment III robust with strong bristles, usually 

 with a definite apical pit bearing short sensilla. Thorax with or without 

 anterior tubercle on scutum. Wing with IRC small to large, rhom- 

 boidal in shape; vein M 2 not interrupted at base; stem M as long 

 as r-m or shorter; macro trichia moderate in number on distal surface 

 of wing. Claws of female long and slender with moderately long basal 

 tooth, in male equal with bifid tips as usual; tarsomere III about 

 twice length of IV, the latter cordate on fore and mid legs with a 

 spine on each of the two lobes; V without batonnets. Abdominal 

 terga moderately setose. Female with 2 subequal, highly sclerotized, 

 functional spermathecae and a third one rudimentary; genital sclero- 

 tization with moderately deep mesal cleft and well-developed, pointed 

 submesal lobes on sternum IX, internal lamellae bluntly expanded 

 mesad with small anterior point directed caudad. Male genitalia 

 with tergum IX short, the pubescent membranous caudoventral 

 lobes small; sternum IX narrow, basistyle with short mediangular 

 process; dististyle curved; parameres fused at base in the single 

 species whose male is known. 



This is the only group of the subgenus Neostilobezzia with a charac- 

 teristic color pattern of the wings. 



Species included: Stilobezzia centripictura Tokunaga, New Guinea; 

 nebulosa Tokunaga, New Guinea; speculae Macfie, Malaya; sub- 

 nebulosa, new species, Thailand; venefica, new species, Thailand. 



7. Stilobezzia (Neostilobezzia) speculae Macfie 



Figures 32, 47 



Stilobezzia speculae Macfie, 1934a, Ann. Trop. Med. Parasit., vol. 28, p. 284 

 [female; Malaya]. 



Female. — Length of wing 1.72 mm; breadth 0.62 mm. 



Head: Eyes narrowly separated; vertex dark brown (fig. 47a), 

 with 16 hairs mesad plus 6 at each posterolateral angle. Antenna 

 (fig. 32) brownish, antennomeres III-XV each with base narrowly 

 pale; III-XV lengths as 18-11-11-11-12-12-14-15-23-24-26-27-31; 

 AR 1.26. Palpal segments (fig. 47d) as 6-20-28-15-24; I-IV dark 

 brown, V pale; III with scattered long hairs, slightly swollen in 



