September, 1941 
10. 
a. 
Dorsum partly brownish; apical area 
of cortum and usually clavus dis- 
tinctly brownish, sometimes dark 
Browtor evenisluscous. 4.. ..scs . +. 5 
Membrane with apical half infuscated 
along median line, this darkened 
area forming a distinct, longitudinal 
ray which may be widened apically; 
corium with a triangular dark 
brownish spot just before apex, 
clavus usually brownish; length 
Brule UUM ne: fc. ye: belfragii, p. 162 
Membrane never forming a median, 
longitudinal fuscous ray; smaller 
One 2 i eh 6 
Apical one-fifth of second antennal 
Peete TUSCALCt? hee ie ei. eb 
canadensis var. canadensis, p. 164 
Second antennal segment uniformly 
oMCr CCM Mea Maken ct be ears 5 i 
Scutellum partly fuscous; clavus also 
more or less darkened; corium with 
a triangular dark patch before apex 
ule ne tiliae, p. 161 
Scutellum pale; clavus and apex of 
corium usually darkened......... 8 
Area of clavus bordering scutellum 
dark brown; apical half of membrane 
clear, a fuscous spot at margin 
either side of middle, a spot also 
De racringetiprof cuneus..- ya). +4 
not eee inconspicuus, p. 161 
Area of clavus bordering commissure 
as well as along scutellum dark 
brown; apical half of membrane 
rather uniformly infuscated...... 
es clavigenitalis, p. 163 
Rostrum scarcely attaining apices of 
intermediate coxae; color rich yel- 
lowish brown, darker on clavus and 
Presa ecOliutny st c.-.6o 0 2 eee. 0 10 
Rostrum extending beyond apices of 
intermediate cOXa€... 24.0.0. es. 11 
Second antennal segment darkened 
at apex, its length greater than 
width of pronotum at basal margin 
Mee AN ko... viburni, p. 159 
Second antennal segment not  in- 
fuscated, its length less than width 
of pronotum at base. .nyssae, p. 164 
Apical half of tylus black; two reddish 
bands present near apices of hind 
femora- sides of body red.......+. 
obs ee rr atritylus, p. 157 
Tylus not black, or, if so, then body 
and bands on femora not reddish. .12 
KNIGHT: PLANT Bucs, or MIrIDAE, oF ILLINOIS 
12; 
3: 
14. 
1D. 
Wey. 
Le 
le 
To: 
155 
Hind femora without two distinct 
bands near apices; when dark, paler 
only at tip; second antennal seg- 
ment rarely darkened, if so, bands 
On UeMmors, ncistinc tem seer ee 13 
Hind femora with distinct dark or 
light bands near apices; second an- 
tennal segment darkened apically. .21 
Scutellum dark, with a pale, median 
stripe on apical half; dorsum dark 
greenish brown to almost black, a 
lateral, dark fuscous stripe extend- 
ing full length of body; femora dark 
sRiilale: ORME OVO ao oe invitus, p. 157 
Scutellum sometimes dark, but with- 
out any indication of a pale median 
Liste ome pee Pe ete he hee NY a BI, 14 
Color distinctly reddish; head, pro- 
notum, femora and veins of mem- 
brane:ted.. eee tinctus, p. 157 
Golonnotr ecuish eee ee ee ee iB) 
Hemelytra uniformly rich brownish, 
or brownish pink; clavus and apical 
half of hemelytra not appreciably 
Garken site Soy Sueeng sry ort een tA: 16 
Hemelytra not uniformly colored; 
clavus and apical half of cortum 
darker than scutellum and _ basal 
NalfoUcorl ure ees sate Meee 18 
Hemelytra and femora brownish pink; 
membrane distinctly darkened... . 
PREM MM Rode aa 210 fagi, p. 161 
Hemelytra reddish yellow brown to 
black, or uniformly rich brownish; 
membrane darkened, or uniformly 
Vellowishae eetet eth tee cheers ee ig) 
Dorsal prongs of left genital clasper 
parallel or converging at tips, fig. 
14 ess Sent ee ar: hirticulus, p. 163 
Dorsal prongs of left genital clasper 
divergent at tipssfig: 1647.02.00... 
rape Wnicnieey Mon, a8 geminus, p. 163 
Second antennal segment darkened 
apical Vives ean eect ol so tose 19 
Second antennal segment uniformly 
colored, never distinctly darkened 
ADICA Ll yaaa emits cae sera nal 20 
Length 4.70-5.00; female vertex dis- 
tinctly wider than dorsal width of 
an eye; male left genital clasper 
with basal spine shorter and more 
slender than posterior spine, fig. 164 
Oe ie ee es ee carpini, p. 164 
Length 5.50-6.00; female vertex nar- 
rower than dorsal width of an eye; 
male left genital clasper with basal 
