150 
chorn, Elizabeth, Elizabethtown, Erie, 
Ernst, Evanston, Fairmount, Farmer City, 
Fountain Bluff, Fox Lake, Frankfort, Ful- 
ton, Galena, Galesburg, Georgetown, Giant 
City State Park, Glencoe, Glen Ellyn, Glen- 
Golconda, Grand Detour, Grand 
view, 
Fig. 162.— Lygus oblineatus. 
Tower, Grand View, Grayville, Hamilton, 
Hardin, Harrisburg, Harvard, Hatton, Ha- 
vana, Henry, Herod, Hillsboro, Hillsdale, 
Homer, Horseshoe Lake, Iroquois, Joliet, 
Kampsville, Kankakee, Kansas, Kappa, Kar- 
nak, Keithsburg, Lawrenceville, Lima, 
Litchfield, Mahomet, Makanda, Marshall, 
Mason City, Maywood, McClure, Metrop- 
olis, Milford, Monmouth, Monticello, 
Mounds, Mount Carmel, Mount Carroll, 
Muncie, New: > Columbia, New Milford, 
Normal, Oak Lawn, Oakwood, Olive 
Branch, Ozark, Palmer, Palos Park, Pans, 
Parker, Patoka, Pekin, Philadelphia, Pu- 
laski, Quincy, Riverdale, River Forest, 
Rockford, Rock Island, Rockton, St. Anne, 
Savanna, Savoy, Seymour, Shawneetown, 
Sheldon, Sherman, Sparland, Springfield, 
Starved Rock State Park, Temple Hill, Un- 
ion County State Forest, Urbana, Vienna, 
Ware, Warsaw, Watseka, Waukegan, 
West Union, White Heath, White Pines 
Ittinois NaturAL History SuRvVEY BULLETIN 
Vol. 22, Arie 
Forest State Park, Willow Springs, Wood- 
stock,» Y orks Zion: 
Lygus vanduzeei Knight 
Lygus vanduzeei Knight (19174, p. 565). | 
Matce.—Length 7.10, width 3.30. Head 
width 1.25, vertex 0.50. Rostrum, length 
2.93, just attaining posterior margins of 
hind coxae, yellowish brown, apex blackish. 
Antennae, first segment, length 0.85, red- 
dish brown to black; second, 2.22, reddish 
brown, apex blackish; third, 1.31, blackish, 
narrow pale area at base; fourth, 1.00, 
fuscous; all segments with fine pubescence. 
Pronotum, length 1.70, width at base 2.82; 
nearly glabrous, strongly shining, punctures 
deep and irregularly placed; a small black 
spot present behind each callus, usually two 
in darkest specimens; basal angles with a 
black spot just inside the narrow, pale mar- 
gins; in darkest specimens, dark lines ex- 
tending along lateral margins of disk; a 
small black spot present just above coxai 
cleft; dark specimens have dark brown rays 
behind black spots on disk. Scutellum 
transversely rugose and sparsely punctate; 
yellowish brown, with apex and dash on 
either side at base paler. Hemelytra strong- 
ly shining, with minute pubescence, nearly 
glabrous; punctures coarse and deep, some- 
what crowded; color rich dark brown, dark- 
er on clavus and at apex of corium; claval 
vein and cubitus pale; embolium translucent 
yellowish except at apex; cuneus translucent 
yellowish, dark brownish to blackish at 
base and on extreme apex. Membrane 
fuliginous, a pale spot present in center and 
on either side just behind apex of cuneus; 
veins at apices of cells and in area border- 
ing apex of cuneus also pale. Legs yellow- 
ish brown, apical halves of posterior femora 
brownish to blackish, with two pale rings 
near each apex; tibiae greenish yellow, each 
apex and spines dark brownish, a dark spot 
on base and, in some cases, a dark stripe; 
tarsi dark brownish, tips blackish. Venter 
yellowish brown, a dark brownish, longi- 
tudinal stripe on either side; some speci- 
mens brownish beneath, thus forming a 
pale stripe beneath dark lateral one. Genital 
claspers, fig. 161, typical for this group, but 
shape of claw on right clasper and internal 
arm on left distinguishes this species. 
FEMALE.—Length 6.70; width 3.40; more 
robust than male, but very similar in color 
and general structural characters. 
