I08 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



Abdomen : Tergite of segment i brown, the posterior margin with 

 fringe of yellow hairs ; pleurites brown, with long yellow hairs that 

 reach the third segment. Segment 2 brown, the anterior half and the 

 lateral regions white-pruinose, clothed with short yellow hairs. Other 

 segments dark brown, irregularly covered with short yellow hairs. 

 Sternites light brown. 



Genitalia: Sidepiece (pi. 22, fig. 13) somewhat cylindrical in 

 shape, longer than wide, the basal margin at angle to apical margin ; 

 dorsal opening occupying more than half of dorsal surface of side- 

 piece; with concavity on dorsal surface near middle of apical end. 

 Clasper (pi. 22, fig. 13) conical in shape, about half as long as side- 

 piece ; apex rounded, with two terminal spines arranged so that one is 

 distal to the other. Body of adminiculum (pi. 22, fig. 14) longer than 

 wide, the apex rounded with median concavity ; longitudinal, raised, 

 keel-like structure which extends from the middle of apex halfway 

 along the adminiculum where it divides in two, one branch entering 

 each of the basal processes ; with numerous minute spicules over entire 

 adminiculum and with longer hairs at apical concavity and along longi- 

 tudinal keel ; basal processes extremely short, narrow, blunt, not well 

 sclerotized; short winglike structure lateral to each basal process. 

 Adminicular arms (pi. 22, fig. 15) composed of about 5 strong teeth, 

 one of them more than twice the length of the others. 



Female (pi. 28, figs. 130-132, and pi. 35, fig. 273). — 3.6 mm. long. 

 Head : Dichoptic ; elongate. Eyes shiny black ; f ronto-ocular tri- 

 angle rather small, the height approximately equal to the base. An- 

 tenna 750 /A long, 1 1 -segmented, hardly tapering, the apex blunt; 

 segment 3<H-2, 3<4+5, 3>ii; scape and pedicel yellow, the 

 flagellum light brown, somewhat darker near apex. Palpi dark brown 

 to black. Vertex rather wide. Frons, clypeus, and occipital region 

 dark brown, gray-pruinose, clothed with yellow scalelike hairs, some 

 long yellow hairs, and very few black hairs. Cornuae of bucco- 

 pharyngeal apparatus narrowly triangular in shape, very slightly scle- 

 rotized ; median space hyaline, smooth, with concavity ; median area 

 is so pale that it is often almost invisible when mounted after clearing. 

 Thorax : Mesonotum rusty brown to orange, the prescutellar re- 

 gion slightly gray-pruinose ; a single gray-pruinose longitudinal stripe, 

 poorly defined, on either side of midline, slightly divergent posteriorly, 

 that blends with white pruinosity of prescutellar region ; short, narrow, 

 yellow, scalelike hairs covering the mesonotum, much longer in prescu- 

 tellar region and around the periphery. Humeral angles brown, with 

 yellow scalelike hairs. Scutellum light brown, with long yellow hairs. 

 Postnotum velvety brown, somewhat gray-pruinose, devoid of hairs. 



