98 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



pressed golden hairs and with some long black ones. Postnotum 

 velvety dark brown, white-pruinose on anterior half, devoid of hairs. 

 Pleura brown, with gray pruinosity ; pre-alar cluster composed of long 

 golden hairs. Stem and knob of halter brown. Wings, 4.0 mm. long 

 and 1.6 mm. wide; relation of body length to wing, 1:1; Sc pilose 

 along basal three- fourths ; Ri completely pilose, with spines also 

 along distal three-fifths, both spines and hairs in double row; R2+3 

 completely pilose ; Cu2 arcuate ; discal cell present. 



Leg: Leg i, length, 3.4 mm.; coxa and trochanter dark brown; 

 femur brown, with very long tan hairs ; tibia brown, the median third 

 somewhat lighter than the remainder ; tarsus dark brown. Leg 2, 

 length, 3.2 mm. ; coxa and trochanter dark brown ; femur brown, with 

 very small black apical ring ; tibia dark brown, its base and apex some- 

 what darker ; basal half of basitarsus dark brown, the apical half black ; 

 tarsal segments 2-5 black. Leg 3, length, 4.5 mm. ; coxa dark brown ; 

 trochanter brown ; femur brown, with small black apical ring, covered 

 with light hairs ; tibia black ; basitarsus and second segment brown ; 

 tarsal segments 3-5 black; basitarsus spindle-shaped, very wide, its 

 length 2.8 times its width ; relation of basitarsus to second segment, 

 4.5 : I ; calcipala very small ; pedisulcus absent. 



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

 black hairs ; pleurites the same color, with extremely long brown hairs 

 that reach the fifth to seventh segment. Segment 2 velvety dark brown 

 to black, with anterior band of white pruinosity, the sides also white- 

 pruinose, with short black hairs. Other segments velvety dark brown 

 to black, with short black hairs. Sternites tan, densely clothed with 

 long black hairs. 



Genitalia: Sidepiece (pi. 22, fig. 7) somewhat cylindrical in 

 shape, longer than wide, the apical margin shorter than the basal; 

 dorsal opening occupying about one-third the dorsal surface of side- 

 piece. Clasper (pi. 22, fig. 7) conical in shape, somewhat shorter than 

 the sidepiece, the apex well tapered but blunt, with 2 strong terminal 

 spines ; basal opening wide, extending along less than half the length 

 of clasper. Body of adminiculum (pi. 22, fig. 9) wider than long, the 

 apical margin rounded ; with several patchlike markings from which 

 extend short hairs ; longitudinal, triangular-shaped, keel-like structure 

 along midline from which arise somewhat longer hairs ; minute, black 

 spicules toward middle of base ; basal processes short, blunt, not 

 heavily sclerotized, with retrorse spurlike structures. Arms of ad- 

 miniculum (pi. 22, fig. 8) without teeth, the lateral plate elongate and 

 without numerous wrinkles. 



Female (pi. 28, figs. 124-126, and pi. 35, fig. 270). — (First descrip- 

 tion of female.) 3.9 mm. long. 



