124 
toward apex but scarcely exceeding thick- 
ness of first segment. 
Hasits.—Occurs on willow (Salix sp.). 
Known DistrisuTtTion.—lllinois, Indi- 
ana, lowa, Maryland, Minnesota, Missouri, 
New York, Ohio, Ontario. 
Illinois Records.—Ten males and 16 fe- 
males, taken May 29 to Aug. 23, are from 
Algonquin, Alton, Antioch, Byron, Cham- 
paign, Dubois, Eichorn, Kankakee, Mere- 
dosia, Savanna, Urbana, Waukegan. 
Pilophorus clavatus (Linnaeus) 
Cimex clavatus Linnaeus (1767, p. 729). 
Mace.—Length 4.60, width 1.53; from 
tip of tylus to basal margin of pronotum, 
1.50. Rostrum, length 1.73, reaching to mid- 
dle of hind coxae. Antennae, first segment, 
length 0.33, fusco-brownish; second, 1.75, 
gradually thickened from base toward apex, 
greatest thickness 0.11, slightly greater than 
thickness of first segment, dark brownish 
black, more nearly black on apical half; 
third, length 0.66, fuscous, pale on basal 
half; fourth, length 0.39, fuscous, paler at 
base. Pronotum, length 0.73, width at base 
1.40. General color very dark brown, 
almost black; hemelytra brown; clavus dark- 
er than corium except for area bordering 
claval suture; polished only behind posterior 
silvery line exterior to radial vein. Dor- 
sum clothed with fine, short, golden and 
yellowish pubescence intermixed with short, 
erect, stiff bristles; posterior silvery line dis- 
located at claval suture, but not disconnected 
with portion on clavus. 
FEMALE.—Length 4.60, width 1.67; from 
tip of tylus to basal margin of pronotum, 
1.55; very similar to male in form, color 
and pubescence. 
Hasits.—Occurs on oaks (Quercus spp.). 
Known DistriputTion.—This is a Euro- 
pean species known in America from Brit- 
ish Columbia, Colorado, Illinois, Iowa, 
Massachusetts, Michigan, Minnesota, New 
York, North Dakota, Ontario. 
Illinois Records.—ILLINors: 2 9. Cary: 
Aug. 27, 1905, on oak, W. J. Gerhard, 1 2, 
29,FM. KANKAKEE: Aug. 1, 1933, Ross & 
Mohr, 1¢. 
Pilophorus setiger new species 
Matve.—Length 3.90, width 1.50. Head 
width 0.91, vertex 0.45. Rostrum, length 
1.51, reaching base of hind coxae. Antennae, 
Ittinois NATURAL History SuRVEY BULLETIN 
Vol. 22; Avi 
first segment, length 0.30, yellowish brown; 
second, 1.34, yellowish, apical one-fourth 
very dark brown, slender, slightly thicker 
apically; third, 0.48, pale, apical half fus- 
cous; fourth, 0.39, fuscous. Pronotum, 
length 0.73, width at base 1.23; from tip of 
tylus to basal margin of pronotum 1.38. 
Dorsum clothed with fine, simple, yellowish 
pubescence intermixed with sparsely set, sub- 
erect, bristlelike hairs; posterior silvery 
band dislocated at claval suture, but still 
making contact with that part on clavus; 
basal band thick, extending from costal edge 
to claval suture at a point very slightly be- 
hind tip of scutellum; paracuneus with two 
silvery patches. General color dark brown 
to almost black, hemelytra brown, corium 
dark brown and shining on area behind pos- 
terior silvery line and exterior to radial vein, 
cuneus also dark brown and shining; mem- 
brane pale fuscous, a large brown cloud cov- 
ering larger areole and central area of mem- 
brane; legs brown; coxae partly paler; hind 
tibiae very slightly curved. 
FEMALE.—Length 3.90, width 1.50. Very 
similar to male in general proportions, color 
and pubescence. 
Holotype, male.—Kings Bluff, Winona 
County, Minn.: June 9303027 r eee 
Knight, Ke. 
Allotype, female,—Same data as for 
holotype, Kc. 
Paratypes.—ILLINoIS.—GALENA: June 
30, 1932, Dozier & Mohraziceejulyen: 
1934, DeLong & Ross, 1 ¢. PAtos Park: 
May 31, 1914, W. J. Gerhard, 19. Wiu- 
Low SPRINGS: June 9, 1912, 1 ¢ ; June 28, 
1903, 19; Sept. 4, 190430 Vy senses 
hard, 19, FM. 
SoutH Daxotra.—Trait County: Aug. 
19, 1923, A. A. Nichol}stiaeeee 
MIRINAE 
KEY TO GENERA 
1. Pronotum distinctly swollen at middle 
as wide as or wider than hind margin, 
fig. 142.......0.. z 
Pronotum widest at hind margin, not 
noticeably swollen at middle, fig. 145 3 
i) 
Length of first antennal segment less 
than width of vertex; pronotum not 
extending back to basal angles of 
hemelytra; base of scutellum poorly 
detined 455 ae Pithanus, p. 125 
Length of first antennal segment 
