956 N. C. AGR. EXP. STA. BUL. 239 
yellow subantennal spot in one specimen); pleurites of pro- and mesothorax 
ivory in their upper portion, remainder black; legs castaneous. 
Holotype and one additional male, La Merced, Peru, August 22, 1973 (F. 
Hinostroza); one female, same locality, May 21, 1973 (J. Palomino) (USNM). 
The relatively short lobe of the female abdominal sternum VII is similar to 
M. leucomelas (Walker), but the dark color and sparse markings of chanchama 
serve to distinguish it. 
Macugonalia umbrosa, NEW SPECIES 
Length of male 7.7-7.9 mm, of female 8.5-9.1 mm. Head with median 
length of crown from four-tenths to one-half interocular width and from one- 
fourth to less than one-third transocular width; clypeus flattened medially. 
Thorax with posterior pronotal margin slightly concave; forewing with all of 
inner three apical cells membranous, apical portion of fourth apical cell mem- 
branous. Male pygofer with apex narrowly rounded; plates with macrosetae 
in a regular row; style subtruncate apically. Female abdominal sternum VII 
strongly produced posteriorly, concealing more than half of ovipositor, apex 
acute. 

FIGURES 775, 776.—775, Macugonalia testudinaria (Fowler) (from specimen from 
Trinidad, British West Indies). 776, M. cavifrons (Stal) (a from specimen 
from Brazil; remainder from Peru). 
