Q4 Intinois NATURAL History SURVEY BULLETIN 
width 0.67, vertex 0.36. Antennae, first seg- 
ment, length 0.39; second 0.95; marked as in 
male. Slightly more robust than male, but 
very similar in pubescence and coloration. 
Host Prants.—Chiefly on elm (Ulmus 
americana); also, two Illinois specimens 
were taken on cypress (Taxodium distich- 
um). 
Known DistrisuTion. — Illinois, Indi- 
ana, Iowa, Minnesota, New York. 
Illinois Records.—Twenty males and 34 
females, taken June 24 to Aug. 11, are 
from Aldridge, Algonquin, Ashley, Cham- 
paign, Dubois, Galesburg, Grafton, Harris- 
burg, Kansas, Karnak, Monticello, Pulaski, 
Rockford, Starved Rock State Park, Ur- 
bana. 
Reuteria bifurcata Knight 
Reuteria bifurcata Knight (19394, p. 130). 
This is distinguished from allied species 
by the bifurcate form of the male genital 
claspers, fig. 124; it differs in color from 
irrorata (Say) and fuscicornis Knight in the 
absence of green dots on the clavus and the 
corium. 
Mate.—Length 4.80, width 1.60. Head 
width 0.75, vertex 0.36. Rostrum, length 
1.30, reaching to middle of intermediate 
coxae. Antennae, first segment, length 0.44, 
black marks typical for genus; second, 1.69, 
yellowish, a distinct black ring at base; 
third, 1.21, yellowish to dusky; fourth, 0.69, 
dusky yellow. Pronotum, length 0.62, width 
at base 1.25. Clothed with pale, simple 
pubescence as in irrorata. 
FEMALE.—Length 4.30, width 1.65. Color 
and pubescence not differing from those of 
male. 
Known DistripuTion.—lIllinois, Mary- 
land, New York, Oklahoma. 
Illinois Record.—SHAWNEETOWN: June 
27, 1936, DeLong & Mohr, 1 2. 
Reuteria fuscicornis Knight 
Reuteria fuscicornis Knight (19394, p. 129). 
This species is distinguished from irrorata 
(Say) by the structure of the male genital 
claspers, fig. 124, and the fuscous coloration 
of the second antennal segment. 
Mave—Fig. 125. Length 4.30, width 
1.30. Head width 0.65, vertex 0.55. Ros- 
trum, length 1.21, reaching to apices of 
middle coxae. Antennae, first segment, 
length 0.43, pale, a heavy, black, longitudinal 
Vol. 22;-Art 
line on inner and one on outer margin, the 
two lines connected apically across ventral 
aspect; second, 1.53, blackish at base, shad- 
ing to fuscous on basal half or more, yel- 
lowish apically; third, 1.17, yellowish; 
Fig. 125.— Reuteria fuscicornis, &. 
fourth, 0.56, dusky. Pronotum, length 0.52, 
width at base 1.12. Clothed with simple 
pale pubescence, hairs longer on pronotum, 
embolium and vertex of head; a few fuscous 
hairs at the tip of clavus; pubescence more 
recumbent and silky on clavus and corium. 
Coloration pale to whitish, hemelytra more 
translucent; apex and outer basal angle of 
cuneus, veins at tip of membrane cells, 
blotch on corium near tip of clavus, bluish 
green. This differs from irrorata in hav- 
ing much less green on the hemelytra and 
femora. Ventral surface and legs pale; 
femora sometimes shaded with greenish but 
not forming distinct spots; tibiae with a 
black point at base. 
FemMALE.—Length 4.30. Color and pubes- 
cence not differing greatly from those of the 
male. 
Host PLtants.—Hop hornbeam (Ostrya 
