﻿230 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loo 



Clypeus dark brown, bare. Antenna 0.80 of proboscis; torus dark 

 brown, with minute light hairs ; flagellar whorls scanty ; last two seg- 

 ments elongate, with denser pubescence, penultimate equal to three 

 preceding segments, terminal 1.5 as long as penultimate. Vertex 

 clothed with broad appressed dark scales, except for a narrow light 

 line along eye margins and a pair of lateral white-scaled patches; 

 erect occipital scales short, white in the center, dark laterally. 



Thorax : Scutal integument dark brown, thick shaggy vestiture of 

 mixed broad and rather narrow curved, appressed, dark, bronzy scales, 

 a few narrow, white scales on anterior promontory ; dorsocentral and 

 acrostichal bristles absent; prescutellar bristles usually two to four 

 pairs ; numerous bristles on anterior promontory and supraalar areas ; 

 all bristles dark brown. Scutellum dark, completely covered with 

 very broad, appressed, flat, dark, bronzy scales ; bristles dark brown. 

 Postnotum brown, darker centrally ; two to four minute hairs usually 

 present on lower central portion. Pleural integument rather light 

 brown, less heavily sclerotized areas tan; upper part of propleuron, 

 lower anterior part of sternopleuron, middle posterior part of meso- 

 pleuron, meron and metameron bare ; pronotal lobe and posterior pro- 

 notum white-scaled at least on lower half, frequently posterior prono- 

 tum entirely white-scaled; remainder of pleura completely covered 

 with broad, appressed, translucent, white scales. Pleural bristles: 

 anterior pronotals four to six dark bristles above and a number of 

 lighter, weaker bristles below ; one dark posterior pronotal ; spiraculars 

 usually two or three dark bristles, sometimes as many as five ; propleu- 

 rals four to six light hairs ; lower sternopleurals six to eight light hairs ; 

 one to three upper sternopleural hairs occasionally present ; prealars 

 three to six dark bristles; upper mesepimerals 10 to 12 light hairs. 

 Halteres light and bare on base and lower part of stem, upper part of 

 stem and knob dark-scaled. 



Wings: Scales all dark. Outstanding scales broad on all veins 

 dorsally, narrow on lower surface of veins 3 to 6. Bases of fork cells 

 approximately equidistant from wing base. Fringe mostly dark. 

 Squama fringed. 



Legs : All dark bronzy except for white-scaled coxae and trochanters 

 and conspicuously light-scaled ventral surfaces of all femora; lower 

 surface of all segments somewhat lighter. Enlarged claw of front 

 tarsus toothed at apical third, that of middle tarsus simple. Apex of 

 hind tibia and base of first hind tarsal segment with specialized hairs 

 and scales. Hind tibia 0.9 of middle tibia. 



Abdomen : Very dark iridescent bronzy dorsally ; lateral portions 

 of tergites light-scaled (invisible from above) ; ventral surface uni- 

 formly white-scaled. First tergite with numerous light hairs, eighth 

 segment with strong dark bristles; bristles on other segments very 

 sparse. 



