REVISION OF SPECIES OF STILOBEZZIA KIEFFER 113 



Distribution.' — Viet Nam; Thailand. 



Types.— Holotype male, Di Link, 1200 m, Viet Nam, 22-28 Apr. 

 1960, L. W. Quate, light trap (deposited in Bishop Museum, Honolulu). 

 Paratypes, 5 males. VIET NAM: Di Linh, same data as type, 1 male; 

 same data except dates Sept.-Oct. 1960, 3 males. THAILAND: 

 Chiang Mai, Ampur Muang, July 1962, J. Scanlon, light trap, 1 male. 



Discussion. — This species is named in honor of the collector of 

 the type series, Dr. L. W. Quate of the Bishop Museum staff in Hono- 

 lulu, who collected much of our valuable southeast Asian ceratopogonid 

 material, especially in the strategic Viet Nam-Laos area where our 

 contacts were limited. 



We attempted to associate females from the Viet Nam series of 

 inermipes with quatei on the basis of the size of IRC, the most con- 

 sistent nongenitalic character for separation of the males of the 2 

 species, but all available females fell within the range of inermipes. 

 Either IRC was a mere nodule, or, if open, its length was well below 

 the value of the male of quatei, indicating that they were inermipes. 



Subviridis Group 



Diagnostic characters (fig. 89 of subviridis macfie) . — Medium to 

 large species with shining dark thorax and abdominal terga; legs 

 variably with dark femora and contrasting whitish tibiae, sometimes 

 all pale or with narrow or broad bands; wings not ornamented. Eyes 

 narrowly separated, usually with linear interorbital space, the hairs 

 on vertex crowded along posterior margin. Male antenna with con- 

 spicuous dark plume; female antenna long and slender, segments 

 III-X elongate, elliptical with indistinct apical collar, pale except 

 dark apices of distal few; segments XI-XV dark, surface becoming 

 irregular distally, XV without apical seta. Palpal segment III slender, 

 without sensory pit, but with several long sensilla on distal third; 

 V conspicuously darker. Female mandible with proximal teeth larger; 

 a few serrations on outer margin. Thorax broad, scutum less convex 

 than usual, without anteromedian tupercle. Wing unmarked except 

 an increasing brownish cloudiness anteriorly and especially over r-m 

 crossvein; anterior veins strong; IRC moderately large; stem M about 

 3 times length of r-m; vein M 2 interrupted at base; no macro trichia 

 on wing surface; alula fringed. Legs with femora moderately robust; 

 vestiture weak, extensor hairs on hind tibia slender; female claws 

 long and slender, at least half as long as tarsomere V, with long slender 

 blunt basal tooth; in female V with long stout batonnets on fore and 

 mid legs and sometimes on hind leg; tarsomeres I— III with strong 

 ventral spines usually on mid leg only, rarely on hind leg. Male claws 

 equal with bifid tips as usual. Abdominal tergum I and sometimes base 

 of II with pale area mesad, posterior terga dark; abundant scattered 



