50 



U.S. NATIONAL MUSEUM BULLETIN 283 



sharp, the longer as long as V on fore leg, slightly shorter on others, 

 the smaller claw small and sharp; V without ventral batonnets; IV 

 weakly bilobed, without spines; I— III with rather weak long ventral 

 spines as: fore leg 0-0-0, 0-0-1, 0-0-2; mid leg 1-0-1, 0-0-1, 0-0-1; 

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

 V as 45-43-26-11-4-3-8; TR 2.51; hind tibial comb with 6-7 

 spines (av. 6.5, n=4). 



Wing (fig. 55e) : Hyaline, unmarked, veins slightly brownish; IRC 

 small, sometimes poorly formed, vein R 4 + 5 thickened from base of 

 IRC to tip of 2RC; CR 0.65; r-m to stem lengths as 7:17; anal angle 

 obtuse; alula with fringe lacking on proximal half; macrotrichia con- 

 fined to a row close to margin between 2RC and tip of vein Mi. Halter 

 slightly infuscated. 



Figure 55. — Stilobezzia insolita, new species (9 ). a, frontovertex; b, last 1 tarsomeres 

 and claws; c, palpus; d, 9 genitalia; e, wing;/, spermathecae; g, abdominal terga I-IV. 



Abdomen (fig. 55g) : Pale brownish, tergum I and extreme distal 

 terga yellowish brown; distal segments with definite tapering con- 

 formation; I with 3 setae on each side; I I-IV with sparse setae in a 

 caudal row on each tergum. Spermatheca (fig. 55/), 1, peculiarly re- 

 tort-shaped to unequally U-shaped, with slender, long, sclerotized 

 neck; main portion measuring 0.056 mm by 0.035 mm. Genital 

 sclerotization as in figure 55d. 



Male. — Unknown. 



Distribution. — Malaya. 



Types. — Holotype female, Kuala Lumpur, Selangor, Malaya, July 

 1958, R. Traub, light trap (USNM 69456). Paratypes, 2 females. 

 MALAYA: Pahang, Kuala Singgora, 18 July 1958, R. H. Wharton, 

 light trap, 1 female. Selangor, same data as type, but 12 June, 1 

 female. 



Discussion. — This species is set off distinctly by the wide eye 

 separation, the reduced anal angle of the wing, and the fringe on the 

 alula, as well as the poorly developed IRC and thickened R 4 +s; the 

 long sharp female claw with small sharp smaller claw and the peculiar 

 appendiculate spermatheca are also diagnostic. 



