70 U.S. NATIONAL MUSEUM BULLETIN 2 83 



5. Wing with more than 3 dark spots; IRC poorly developed, sometimes nearly 

 obsolete; tarsomere V of female without any ventral batonnets or stout 

 spines; abdominal terga pruinose brownish without any conspicuous pat- 

 tern, setation weak, mostly concentrated laterad; male genitalia with basi- 

 style elongated and tapering with a poorly developed basidorsal process; 

 parameres long with well-developed basal lobes, aedeagal sclerites bearing 



prominent dorsomedian lobes (fig. 80) Poikiloptera Group 



Wing with not more than 1 dark spot (occasionally somewhat vague) ; 1 RC 

 well developed; tarsomere V of female usually with a pair of batonnets on 

 fore and mid legs, sometimes also on hind leg; abdominal tergum I and 

 sometimes base of II with pale area mesad, otherwise these and posterior 

 terga variably dark; terga with abundant scattered stout setae usually as 

 far as segment V, behind which setae are sparse and weak; male genitalia 

 with basistyle usually swollen at base with a hooklike basidorsal process; 

 dististyle short, usually markedly incurved; parameres each a strongly 

 sclerotized sinuate or curved rod with clavate tip and basal lobe in form of 

 small triangular process; aedeagal sclerites usually slender and curved with 

 caudomedian tip sometimes slightly expanded and grooved but without 

 any dorsomedian lobe (fig. 89) Subviridis Group 



Boharti Group 



Diagnostic characters (fig. 70). — Intermediate in many respects 

 between the subgenera Stilobezzia and Neostilobezzia, but placed in 

 Stilobezzia because of the absence of macrotrichia on the wing surface ; 

 Neostilobezzia features are the well-developed lRC and the lesser 

 disparity in lengths between tarsomeres III and IV. 



Head with eyes narrowly separated. Antennomeres unicolored, 

 III-X without distal constriction and strongly cylindrical. Palpal 

 segment III slender with few bristles and a distinct sensory pit. 

 Mandible with few teeth, outer serrations absent. Thorax with anterior 

 margin of scutum evenly convex, without tubercle. Legs not unusually 

 bristly; claws of female with basal tooth elongate and slender; tarso- 

 mere III about 2 times IV in both sexes; IV unarmed; V in female 

 with large number of sharp-tipped ventral batonnets. Wing unmarked ; 

 IRC well-developed; lRC and 2RC with broad lumen. Abdomen 

 linear and slender, terga lightly setose; 2 functional spermathecae, 

 rounded, well-sclerotized, with hyaline perforations, a small round 

 rudimentary third spermatheca present. Male genitalia with disti- 

 style elongate; basistyle with distinct ventral lobe on broadened 

 basal portion and group of 3 setigerous tubercles on caudal side of 

 mediangular process clearly visible as a rule; aedeagal sclerites straight 

 to markedly sinuate; parameres each with straight columnar main 

 body, a long winglike lateral lobe from base, and often with long 

 whiplike, highly sclerotized distal appendage borne subapically. 



Species included: Stilobezzia boharti Tokunaga, Ryukyu Islands; 

 fortipes, new species, Malaya; rotunditheca, new species, Sarawak; 



