September, 1941 
Strongylocoris stygicus (Say) 
Capsus stygicus Say (1832, p. 24). 
Mare—Fig. 113. Length 4.20, width 
2.00. Head width 0.99, vertex 0.54. Ros- 
trum, length 1.04, reaching to middle of 
intermediate coxae. Antennae black; length 
of first segment, 0.30; second, 1.12; third, 
0.86; fourth, 0.47. Pronotum, length 0.91, 
width at base 1.50. Form ovate, black, 
shining, finely but densely punctate, some- 
what rugulose, nearly glabrous, sparsely 
set with fine, short pubescence; apices of 
femora, two anterior pairs of tibiae, all 
except apical segment of tarsi, and bases 
of trochanters, pale yellowish; hind tibiae 
fuscous to black, becoming paler on distal 
half. Male genital claspers distinctive, fig. 
114. 
FEMALE.—Length 4.40, width 2.10. More 
ovate and robust than male, but very similar 
in color, puncturation and scanty pubescence. 
Foop PLANT.—Goldenrod (Solidago sp.). 
KNowN DIstTRIBUTION.—Commonly 
distributed in the eastern United States 
Fig. 113.—Strongylocoris stygicus, &. 
and Canada and extending westward to 
Alberta, Colorado, Montana. 
Illinois Records.—One hundred forty- 
five males, 36 females and 12 nymphs, taken 
May 6 to Sept. 21, are from Anna, Bloom- 
ington, Bluff Springs, Carbondale, Cham- 
paign, Charleston, Chicago, Cypress, Dan- 
KNIGHT: PLANT Bucs, or Miripae, or ILLINOIS 79 
ville, Dolson, Edgebrook, Elizabethtown, 
Galena, Galesburg, Golconda, Goreville, 
Grand Detour, Grandview, Hamilton, Her- 
od, Joliet, Jonesboro, Keithsburg, Makanda, 
Monticello, Mount Carmel, Muncie, Odin, 
Oquawka, Palos Park, Pulaski, Sheldon, 
Springfield, Urbana, Vienna, Warsaw, 
West Union, Willow Springs. 
Strongylocoris pallipes Knight 
Strongylocoris pallipes Knight (1926/, p. 
54). 
Not taken in Illinois; known from Mary- 
land and Virginia. Male genitalia as in 
fig. 114. 
Strongylocoris breviatus Knight 
Strongylocoris breviatus Knight (1938, p. 1.) 
This species is allied to stygicus (Say), 
but is distinguished by the yellowish first 
and second antennal segments, the latter 
having a distinct black band at the base; 
male genital claspers are distinctive for this 
species, fig. 114. 
Matve.—Length 4.30, width 2.00. Head 
width 1.06, vertex 0.56. Antennae, first seg- 
ment, length 0.35, yellowish brown, black at 
base; second, 1.30, brownish on basal half 
and black at base; third, 0.95, black; fourth, 
0.47, black. Pronotum, length 0.91, width 
at base 1.51. Hemelytra with costal margin 
moderately arcuate. Dorsum finely and 
closely rugulose punctate, sparsely clothed 
with short, pale pubescence, this pubescence 
more apparent on lateral margins of hem- 
elytra, paracuneus with three or four long 
hairs. General coloration deep black, shin- 
ing; femora black, apices yellowish; tibiae 
uniformly yellowish, except hind pair, which 
have apices and variable area at base fus- 
cous; tarsi yellowish, apical segment black. 
FEMALE.—Length 4.10, width 2.20; hem- 
elytra more sharply arcuate than in male. 
Head width 1.20, vertex 0.64. Antennae, 
first segment, length 0.36, yellow, base black ; 
second, 1.17, yellow, apical one-fourth and 
narrow ring at base black; third, 0.86, black, 
yellowish at base; fourth, 0.44, black. 
Foop PLrant.—Goldenrod (Solidago al- 
tissima). 
Known DistripuTion.— Nova _ Scotia 
and Maine to District of Columbia, and 
westward to Alberta, Minnesota, Montana. 
Illinois Records.—Nineteen males and 
22 females, taken May 21 to Aug. 25, are 
