94 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 125 



long black hairs. Postnotum velvety dark brown to black, gray- 

 pruinose, devoid of hairs. Pleura dark brown to black, with gray 

 pruinosity. Stem of halter brown, the knob dark brown. Wings, 3.6 

 mm. long and 1.4 mm. wide; relation of body length to wing, 1,1:1; 

 Sc completely pilose; Ri completely pilose, the apical half with spines 

 also ; hairs on basal section in several rows ; R2+3 completely pilose ; 

 Cu2 arcuate ; discal cell present. 



Legs: Leg i, length, 3.2 mm.; entire leg dark brown except for 

 tarsal segments 4 and 5 which are black. Leg 2, length, 3.1 mm.; 

 entire leg dark brown. Leg 3, length, 4.1 mm. ; entire leg dark brown ; 

 basitarsus spindle-shaped, its length 3.4 times its width; relation of 

 basitarsus to second segment, 4.6 : i ; calcipala short ; pedisulcus absent. 



Abdomen : Tergite of segment i dark brown to black, with short 

 black hairs ; pleurites the same color, with long brown hairs that reach 

 segment 5. Segment 2 velvety dark brown to black, white-pruinose on 

 lateral areas, with short black hairs. Other segments velvety dark 

 brown to black, white-pruinose along posterior margins, with short 

 black hairs. Sternites dark brown, gray-pruinose, with black hairs, 

 longer on more basal segments, shorter on posterior ones. 



Genitalia : Sidepiece (pi. 22, fig. 4) longer than wide, cylindrical 

 in shape, the basal and apical margins not parallel to each other ; dorsal 

 opening occupying approximately half of dorsal surface of sidepiece, 

 Clasper (pi. 22, fig. 4) conical in shape, somewhat shorter than side- 

 piece, the apex rather blunt, with two strong terminal spines ; basal 

 opening wide, extending along less than half the length of clasper. 

 Body of adminiculum (pi. 22, fig. 5) wider than long, the apical 

 margin rounded ; ventral surface rises slightly from lateral margins 

 toward the midline; almost entire surface with small pigmented 

 patches, each with several minute black spines or hairs ; basal processes 

 short, blunt, well sclerotized only at ends, with posteriorly directed 

 spurlike processes. Arms of adminiculum (pi. 22, fig. 6) without 

 teeth, the lateral plate elongate, without numerous wrinkles. 



Female (pi. 28, figs. 121-123, and pi. 35, fig. 271). — (First descrip- 

 tion of female.) 3.7 mm. long. 



Head: Dichoptic. Eyes black; height of fronto-ocular triangle 1.3 

 times its base. Antenna 710 ju, long, 11 -segmented, tapering; segment 

 3<i-F2, 3<4-|-5, 3 = 11; scape and pedicel light brown, the flagellum 

 black. Palpi black. Frons and clypeus black, gray-pruinose irregularly 

 covered with short, yellow, scalelike hairs and somewhat longer black 

 hairs. Occipital region black, with few long black hairs and with 

 many yellow hairs. Cornuae of buccopharyngeal apparatus well 

 sclerotized, the ends sharply pointed; median space hyaline and 

 smooth. 



