
CICADELLINAE: PART 2. NEW WORLD CICADELLINI 251 
shaft, anteapical ventral process median, single, recurved, acute; paraphyses 
absent. Female unknown. 
Crown black except the three large depressions which are yellow and with a 
white pruinosity; pronotum castaneous with depressions as on crown; 
scutellum castaneous, its elevated posterior portion glabrous; forewings trans- 
lucent except outer portion of corium and commissural margin which are 
fuscous; face, propleura, and legs brown, the last with all knees, and anterior 
tibiae, black. 
Holotype male, Colombia, 1942 (L. Richter) on indefinite loan to USNM 
from NCS. 
C. impressa, n. sp., is more similar to C. stygiana, n. sp., than to C. russeola, n. 
sp. Distinguishing characters are discussed under stygiana. In addition, the 
hind knees at rest extend forward well beyond the posterior proepimeral 
margins, a condition different from both of the other species. 
Chichahua russeola, NEW SPECIES 
FIGURE 204 
Length of female 9.2-9.5 mm. Head not produced, its anterior margin 
slightly concave medially in dorsal view, median length of crown approx- 
imately one-half interocular width and approximately one-third transocular 
width, without a carina at transition from crown to face, crown with a trans- 
verse depression between ocelli delimited by an M-shaped elevation along 
basal margin, and a narrower lateral depression on each side, extending from 
upper margin of antennal ledge to basal margin of crown; clypeus with mus- 
cle impressions not very distinct; clypellus moderately convex in lateral view. 
Pronotum with width less than transocular width of crown, lateral margins 
parallel; pronotum with a transverse impression on each side behind eye, disk 
transversely rugose; forewing with apical portion membranous to a varying 
degree, appendix present, veins of corium elevated and distinct, with a plexus 

FIGURE 204.—Chichahua russeola, n. sp., holotype. 
