84 Itytrnois Naturat History Survey BULLETIN 
spines black. Dorsum clothed with erect, 
simple pubescence intermixed on hemelytra 
with patches of deciduous, black, scalelike 
hairs; spot behind each callosity, median line 
between callosities, and spot on base of scu- 
tellum formed by masses of black, scalelike 
pubescence. Male genital claspers distinc- 
tive for species, fig. 120. 
FemMaALe.—Length 4.70, width 1.80. Form 
slightly more robust than that of male, but 
color and pubescence very similar. 
Foop PLant.—A single Illinois specimen 
was collected on milkweed (Asclepias sp.). 
Known Distrisution.—Colorado, I[llhi- 
Minnesota, North Dakota, 
nois, lowa, 
‘Texas. 
Illinois Records.—One male and 17 fe- 
males, taken March 8 to Aug. 17, are from 
Bloomington, Champaign, Dubois, Galena, 
Galesburg, Teheran, Urbana. 
Ilnacora stalii Reuter 
Ilnacora stalii Reuter (1876, p. 86). 
Matre.—Length 5.20, width 1.60. Head 
width 0.95, vertex 0.49. Rostrum, length 
1.30, just attaining apices of middle coxae, 
pale, with apical segment black. Antennae, 
first segment, length 0.54, exceeding width 
of vertex, pale, apical half and ring at base 
black; second, 1.95, dusky, more fuscous on 
apex; third, 1.60, black; fourth, 0.65, black. 
Pronotum, length 0.82, width at base 1.34. 
General coloration pale or whitish; hem- 
elytra and legs tinged with greenish; mem- 
brane pale; veins greenish. Dorsum clothed 
with erect, pale hairs sparsely intermixed 
with patches of black, deciduous scalelike 
hairs; a round, black spot behind each cal- 
losity and a median basal spot on scutellum 
formed by black, deciduous hairs. Male 
genital claspers distinctive, right clasper 
terminating in a slender, dorsally projecting 
point, fig. 120. 
FEMALE.—Length 5.40, width 1.80. More 
robust than male, but very similar in pubes- 
cence and color. 
Foop PLants.— Breeds on_ cocklebur 
(Xanthium sp.), sunflower (Helianthus 
sp.), artichoke (H. tuberosus) and perhaps 
on other weeds. A single specimen was col- 
lected on wild grape (Vitis sp.). 
Known DistrisuTion.—Colorado, Mon- 
tana, Texas, eastward to District of Colum- 
bia, New York, North Carolina. 
Illinois Records. — Ninety-eight males 
and 146 females, taken May 23 to Sept. 22, 
Vol- 22, Aria 
are from Algonquin, Alton, Alto Pass, An- 
tioch, Beardstown, Browns, Cairo, Camar- 
go, Carbondale, Champaign, Charleston, 
Chicago, Cornland, Decatur, De Soto, East 
St. Louis, Effingham, Elizabeth, Elizabeth- 
town, Fountain Bluff, Freeport, Galena, 
Galesburg, Hardin, Harrisburg, Ingleside, 
Kampsville, Kankakee, Karnak, Keithsburg, 
Lawrenceville, Meredosia, Metropolis, 
Monticello. Mounds, Mount Carmel, 
Oquawka, Palos Park, Rockford, Rockton, 
Rosiclare, St. Joseph, Seymour, Shawnee- 
town, Starved Rock State Park, Teheran, 
Urbana, Ware, Warren, West Pullman, 
Willow Springs, York. 
Hadronema Uhler 
No Illinois species; Hadronema militare 
Uhler is known from Colorado, Kansas, 
Michigan, New York, South Dakota and 
westward. 
Lopidea Uhler 
KEY TO SPEECHES 
1. Apex of abdomen with a pair of 
claspers (males); all characters in 
couplets 2-14 are illustrated in fig. 
121......6..+.)¢3 ee ys 
Apex of abdomen without claspers 
(females). ....:.. 7 15 
in) 
Left clasper with a plainly visible, 
baso-mesal, flat-hooked tooth. . 
: .staphyleae, p. 90 
Left clasper without such a tooth... 3 
3. Tip of right clasper short, large and 
somewhat rounded, with a short, 
serrate, dorsal tooth just before 
APEX. 8,0. Wee media, p. 89 
Tip of right clasper without such a dor- 
sal tooth at apex. . 5. == + 
4. Base of right clasper produced into a 
long, dorsal, curved arm ae 
So OR na ee eee ae robiniae, p. 89 
Base of right clasper without a long, 
basal, dorsal projection) 2) eee 5 
Right clasper ending in a curved tooth 
which is either long, e.g., instabilis 
or blunt, ¢.¢., /aihyri, 6 
Right clasper ending in a serrate lobe, 
€.2., amorphae-salicis. 2 8 
6. Right clasper with a preapical hook 
which may be reduced to a small 
Swellinvaesme: ae wee instabilis, p. 91 
(nm 
