164 
Mave.—Length 4.80, width 2.20. Head 
width 0.91, vertex 0.34. Rostrum, length 
1.81, almost attaining posterior margins of 
hind coxae. Antennae, first segment, length 
0.58, pale; second, 1.98, pale to yellowish 
brown; third, 1.17, dusky yellow; fourth, 
1.21, dusky. Pronotum, length 0.95, width 
at base 1.70. Color dusky brown, hemelytra 
slightly darker; cuneus pale, translucent; 
membrane pale to smoky, veins yellowish. 
Legs pale to yellowish; femora tending to 
yellowish brown. Venter yellowish to 
brown, darker on sides; genital claspers dis- 
tinctive. 
Femace.—Length 5.00, width 2.30. Head 
width 0.95, vertex 0.39; antennae, first seg- 
ment, length 0.60; second, 1.94; third, 1.17. 
Pronotum, length 1.08, width at base 1.77. 
Slightly more robust than male and more 
yellowish brown in color. Cannot at present 
be separated from female of hirticulus. 
Holotype, male. —Elizabethtown, IIL: 
May 27-312 19322 al Dozier. 
Allotype, female.—Same data as for 
holotype. 
Paratypes.—ILLINoIs.— Same data as 
for holotype, 42, 19. GoLtconpa: June 
22, 1932, on Trifolium pratense, Ross, 
Dozier & Park, 1°34: 
Neolygus nyssae Knight 
Lygus (Neolygus) nyssae Knight (1918c, 
p. 43). 
Mare.—Length 5.50, width 2.50; slightly 
more robust, but in general structure simi- 
lar to quercalbae Knight; pronotum and 
scutellum evenly shaded with rich brown; 
clavus and corium darker brown; genital 
claspers distinctive for species, fig. 164. 
FEMALE.—Length 5.60, width 2.57; very 
similar to male in size and coloration. 
Foop PLANT.—Sour gum (Nyssa sp.). 
Known DistriputTion.—Alabama, Con- 
necticut, Illinois, Mississippi, Ohio, Pennsyl- 
vania. 
Illinois Record.—D1xon Sprincs: June 
24, 1936, DeLong & Ross, 1 ¢. 
Neolygus canadensis Knight 
Lygus (Neolygus) canadensis Knight (19174, 
p. 634). 
This species is allied to omnivagus Knight, 
but is more greenish yellow in color and has 
a distinct, dark spot on the corium. The 
only specimen seen from Illinois has a black 
Intinois NAtTuRAL History SurvEY BULLETIN 
Vol. 22, Atta 
‘ray behind each callus extending nearly to 
the hind margin of the pronotum and 
would, thus, be referable to the variety bino- 
tatus Knight (19170, p. 635). 
Mare—Length 5.50, width 2.08. Second 
antennal segment, length 2.05, pale yellow- 
ish, apical one-third fuscous to black. Mar- 
gins of scutellum usually brownish; cuneus 
pale; legs greenish yellow; hind femora with 
two pale, fuscous annuli near apices; genital 
claspers distinctive, fig. 164. 
Known DistripuTiIon.—lIllinois, Minne- 
sota, New Jersey, New York, Ohio, On- 
tario, Wisconsin. “X 
Illinois Record.—NortTHERN ILLINOIS: 
uly leds 
Neolygus ostryae Knight 
Lygus (Neolygus) ostryae Knight (19174, 
p. 635). . 
Matce.—Length 5.80, width 2.36. Head 
width 1.05, vertex 0.37. Rostrum, length 
2.08, reaching posterior margins of hind 
coxae. Antennae, first segment, length 0.74; 
second, 2.25, yellowish, apex fuscous; third, 
1.25, yellowish with apical half slightly in- 
fuscated; fourth, 0.71, infuscated. Prono- 
tum, length 1.00, width at base 1.85. Deep 
yellowish brown in color; embolium and 
basal half of corium pale yellowish; clavus 
and apical half of corium light brown to 
dark brown; cuneus almost colorless, tinged 
with yellowish. Genital claspers as in fig. 
164. 
FEMALE.—Length 6.00, width 2.40; simi- 
lar to male in coloration, but slightly larger 
and more robust. 
Host PLant.—Hop hornbeam (Ostrya 
virginiana). 
Known DistripuTion.—lIllinois, Massa- 
chusetts, New York, Ontario, Vermont. 
Illinois Record. — NortH EVANSTON: 
Aug. 20, 1905, Gerhard & Wolcott, 1 9, FM. 
Neolygus carpini Knight 
Neolygus carpini Knight (1939a, p. 21). 
Mave.—Length 4.70, width 2.00. Head 
width 0.99, vertex 0.35. Rostrum yellowish, 
apex brownish, length 1.90, extending slight- 
ly beyond hind margins of posterior coxae. 
Antennae with first segment pale, second 
pale with apical one-third -black, third yel- 
lowish, fuscous apically, fourth fuscous. 
Pronotum yellowish green, tinged with 
brown, without definite streaks or vittae. 
