142 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



dark brown. Palpi brown. Frons, clypeus, and occipital region black, 

 with gray-white pruinosity and with short tan hairs. Cornuae of 

 buccopharyngeal apparatus heavily sclerotized, dark, pointed ; median 

 space hyaline, with 5-6 rows of strong teeth. 



Thorax : Mesonotum dark brown to black, completely covered with 

 gray pruinosity except for a fairly wide copper-brown longitudinal 

 band down the midline, which extends to almost the prescutellar re- 

 gion; short, narrow, golden-yellow, scalelike hairs irregularly dis- 

 tributed over mesonotum ; no erect black hairs. Humeral angles brown 

 with slight yellowish cast and with gray pruinosity. Scutellum yel- 

 lowish brown, with a few long yellow hairs and very few scalelike 

 ones. Postnotum dark brown, partially gray-pruinose. Pleura dark 

 brown, with gray-white pruinosity, some areas with yellowish cast. 

 Stem of halter yellow, the knob white. Wings, 2.2 mm. long and i.o 

 mm. wide ; relation of body length to wing, 1:1.2; Sc pilose along 

 basal sixth (3 hairs) ; Ri pilose and spiny along apical two-fifths, some 

 spines thick, others very fine ; R2+3 completely pilose ; Cu2 arcuate ; 

 discal cell absent. 



Legs: Leg i, length, 2.1 mm.; coxa, trochanter, femur, and tibia 

 yellow ; tarsus black. Leg 2, length, 1.8 mm. ; coxa light brown ; tro- 

 chanter and femur yellow ; tibia yellow except for dark-brown patch 

 on anterior face ; basitarsus and segments 2-3 yellow, segments 4 and 

 5 dark brown. Leg 3, length, 2.4 mm. ; coxa brown ; trochanter and 

 femur yellow ; tibia yellow on basal half, dark brown apically ; basal 

 four-fifths of basitarsus and basal half of second segment yellow, the 

 remainder of these segments, as well as all of segments 3-5, dark 

 brown ; relation of basitarsus to second segment, 3.6 : i ; calcipala well 

 developed, reaching only halfway to pedisulcus ; pedisulcus well de- 

 veloped almost at middle of second segment; claw without any sec- 

 ondary tooth or spur (pi. 35, fig. 261). 



Abdomen : Segment i tan, with white pruinosity, the tergite with 

 short yellow hairs, the pleurites with long tan hairs. Tergite of seg- 

 ment 2 dark brown; pleural regions tan, white-pruinose, with long 

 yellow hairs. Segments 3-8 each with 3 dark-brown patches, one 

 central and the other two lateral ; base color tan, covered with gray 

 pruinosity ; golden-yellow hairs on all these segments, but shorter 

 than on segment 2. Sternites tan, pruinose, with yellow hairs. 



Genitalia: Cercus (pi. 29, fig. 151) twice as high as it is long 

 (wide), the posterior angles well rounded. Anal lobe (pi. 29, fig. 151) 

 about twice as high as cercus, anterior and posterior margins rounded, 

 posterior-ventral angle with small prolongation that curves under the 

 cercus. Genital rod (pi. 29, fig. 153) hardly dilated at its base; apical 



