138 
Psyche 
[Sept. 
posterior cell and the upper onter angle of the first basal 
cell and also connects with the central node of the spuri- 
ous vein just below the base of the marginal cell, the re- 
mainder of these cells as well as the remainder of the 
wing hyaline. Abdomen: first segment black with sparse 
yellow pile throughout upon the posterior border which 
is tufted and matted but not conspicuously; it has a few 
hairs directed posteriorly in the middle. The second seg- 
ment is dully shining black with a large, diffuse margined, 
opaque black, basal triangle which extends from close to 
the antero-basal corners to nearly two-thirds the length 
of the segment. The basal pile of the second segment is 
rather long, erect and yellow even on the basal triangles 
but near the middle of the segment it becomes black and 
the whole posterior margin of the segment is rather long, 
fine, erect black pilose except that there is none upon the 
lateral margins. The third segment has similar pile only 
a little shorter across the base of the segment which ex- 
tends more or less diagonally down to include the pos- 
terior corners ; the remainder of the pile is black, erect 
and scarcely shorter. On the fourth segment the pile is 
erect and yellow but sparse on the basal half ; it becomes 
entirely black and snberect upon a large posterior tri- 
angular area of the segment which also excludes the 
lateral margins. Hypopyginm quite shining and quite 
black with long fine yellow pile. 
Holotype: male, Pucallpa, Peru; Dec. 4, 1947; Jose 
Schunke. 
I would consider this to be the male of nigra because of 
its black color and similarly obscure thoracic pattern if 
there were not so many differences. The front is less 
protuberant, the antennae slightly longer, the frontal pile 
predominantly black. There are semi-bare sublateral 
facial stripes and the hind femora of the male is slightly 
but distinctly less thick than in nigra which is a female ; 
the hind tibiae are much less arcuate, the squamae have 
wide blackish borders, the scutellum is more blackish, 
the pile of the mesonotum and scutellum much longer and 
there are some differences upon the pattern of brown 
upon the wing besides still other differences. 
