September, 1941 
31. Front and vertex almost colorless to 
yellowish, not distinctly marked 
with black, rarely with short, vague, 
red lines near each eye; scutellum 
almost colorless to yellowish; a small 
rounded, brown to fuscous spot 
located near either margin at middle 
of apical half... .angustulus, p. 197 
Front and vertex marked with trans- 
GES SENS cl Oe are oe a 52 
32. Scutellum chiefly very dark brown, 
with irregular paler spots; a median, 
slender, pale line present, this line 
irregularly invaded by the darker 
SUG 4 obtectus, p. 199 
Scutellum chiefly pale to grayish, but 
with black mark at either side on 
CUPL CONUS tee, ea a 33 
33. Corium with a longitudinal pale area 
that extends upon base of cuneus 
without interruption; a black line 
paralleling radius but, at apex, 
curving outward to fracture...... 
eR ns a lacunosus, pe 197 
Apical half of corium rather distinctly 
darkened with fuscous, scarcely 
paler than dark marks along radius 
Ce Oe cortitectus, p. 196 
Phytocoris canadensis Van Duzee 
Phytocoris eximius Knight (1920, p. 51) not 
Reuter. 
Phytocoris canadensis Van Duzee (1920, p. 
46). 
Mare.—Length 5.70, width 2.00. Head 
width 0.94, vertex 0.35; yellowish, fre- 
quently tinged with reddish and marked with 
black. Rostrum, length 2.40, attaining basal 
margin of genital segment. Antennae, first 
segment, length 1.28, yellowish, with irregu- 
lar fuscous mottling, bearing five or six 
long, almost colorless setae; second, 2.77, 
chiefly fuscous, paler at base for a space 
of 0.17, infuscation distinctly paler on dor- 
sal aspect of middle third, but becoming 
_ darker toward either end; third, 1.60, chiefly 
dark fuscous, pale at base for a space of 
0.14, with another very narrow, light- 
colored space at apex; fourth, 1.25, black. 
Pronotum, length 0.91, width at base 1.60, 
disk light yellow brown to fuscous, central 
area frequently grayish green, paler anter- 
lorly, narrow light-colored area at basal 
margin, and six black points which fre- 
quently fuse located near basal margin; 
disk distinctly hairy, longest hairs at anter- 
| 
KNIGHT: PLANT Bucs, or MiripAg, oF ILLINOIS 
193 
ior angles, hairs taking color of surface 
from which they arise; propleura_ black, 
with lower margins and a mark extending 
across base of coxal cleft almost white. 
Scutellum dull yellow brown, with a black 
mark present on either side near apex. 
Hemelytra clothed with prominent yellow- 
ish pubescence intermixed with groups of 
white, deciduous woolly hairs, but dark 
hairs arising from dark areas; greenish gray 
to fuscous; base, middle and a triangular 
spot just before cuneus of corium, and sev- 
eral spots on embolium, paler and more or 
less translucent. Tip of embolium, an 
oblique, nearly triangular patch lying just 
inside of radius at apex of corium, and area 
bordering apical two-thirds of claval suture, 
fuscous to black. Cuneus translucent gray, 
with apex, a small point along inner margin, 
and a second near basal angle, black; paler 
parts usually showing some brownish or 
reddish coloration. Membrane fuscous, with 
a large, almost colorless area just beyond 
small areole and tip of cuneus, this area 
divided by a small fuscous spot which 
touches the margin; central area more or 
less invaded by a paler streak; cubitus dis- 
tinctly pallid at apex of areoles. Legs, coxae 
and bases of femora pallid; front and inter- 
mediate femora with a series of irregular 
reddish brown to fuscous marks; poste- 
rior femora chiefly black with many large 
and small, light-colored spots; pale patches 
most numerous and tending to coalesce on 
inner side; an irregular, light-colored an- 
nulation located a short space before apex 
and a second one situated nearer middle, 
but latter annulus interrupted on outside. 
Tibiae with fuscous and pale annuli; hind 
pair infuscated and with irregular pallid 
spots; a broad, pale area on basal one-third; 
spines almost colorless to brownish. Genital 
claspers and flagellum, fig. 176, distinctive 
for species. 
FEMALE.—Length 5.70, width 2.05. Usu- 
-ally very similar to male in coloration; im- 
perfect or poorly colored specimens can 
never with certainty be distinguished from 
females of closely related species. 
Hasits.—This species occurs on a number 
of plants in various situations; it is largely 
if not wholly, predacious. Collected in Illi- 
nois on hornbeam (Carpinus caroliniana), 
gooseberry (Ribes sp.) and _ buttonbush 
(Cephalanthus occidentalis). 
Known DistripuTion.—Connecticut, 
Georgia, Illinois, Indiana, Iowa, Kansas, 
