1949] 
Hull — Genus V olucella 
29 
reddish or yellowish brown in color. The mesonotal pile 
is black with a few pale hairs behind the humeri. The 
humeri are pale yellow. All pleural pile black. The 
bristles of the thorax and scutellum are black; there is 
one bristle upon the mesopleura, three on the notopleura, 
three above wing, three upon the post calli, six in front 
of the scutellum and six upon the scutellar margin. The 
scutellum is dark brown in color, the disc subopaque with- 
out posterior depression ; the disc also has bluish to cop- 
pery reflections and is apparently devoid of pile, although 
fine granulations suggest that there may have been pile. 
There are also a few slender black hairs on each baso- 
lateral margin. Squamae brown with dark brown border 
and fringe. Legs: the femora are brown, the hind pair 
quite dark, the anterior pair somewhat yellowish brown. 
Anterior and middle tibiae brown, the hind pair deep 
sepia. First three segments of all of the tarsi rather 
light brownish yellow but black pilose, the mat pile on the 
hind tarsi light reddish yellow; terminal segments of 
tarsi blackish. Wings : distinctly greyish hyaline with 
a prominent, large, quadrate, sepia brown spot in the mid- 
dle anteriorly; the remainder of the first basal cell is 
also blackish except at the base and except just in front 
of the large brown spot. The posterior cross-veins and 
the margin of the anal vein are blackish ; the stigmal cell 
is yellow beyond the quadrate brown blotch then becomes 
blackish for a short distance and beyond this for nearly 
half of its length the stigmal cell is light brownish grey. 
Marginal cell closed with a rather long stalk. Abdomen: 
first segment is dark sepia brown, more or less shining; 
the remaining segments are black with strong opalescent 
bluish reflections ; there is a faint brassy cast where the 
light strikes them. 
Female. Similar to the male; the front is shining 
light coffee brown on the lower half becoming opalescent 
blackish on the upper half. There is a medial, linear im- 
pression on the upper half of the front and in the middle 
of the front the slightly raised portion is longitudinally 
striate with some of the striae curved. 
Holotype: male, allotype, female, Nova Teutonia, Bra- 
zil, Jan. to April 1948, collected by Fritz Plaumann. 
