September, 1941 
what oval-shaped, fuscous spot at apex. 
Male genitalia as in fig. 106. 
Hasits.—Predacious; occurs most fre- 
quently on alder (Alnus rugosa) and red 
birch (Betula nigra). 
Known DistrisuTIon.—lIllinois, Minne- 
sota, New York, Pennsylvania, West Vir- 
ginia. 
Illinois Records.—Thirty males and 25 
females, taken May | to July 26, are from 
Antioch, Carmi, Charleston, Eichorn, Eliza- 
bethtown, Galena, Grafton, Grand Tower, 
Harrisburg, Havana, Herod, Lawrence- 
ville, Metropolis, Pike, Quincy, Rock Island, 
Starved Rock State Park, West Union. 
Deraeocoris histrio (Reuter) 
Callicapsus histrio Reuter (1876, p. 75). 
Aputts.—Length 4.50—-5.00, width 2.00— 
2.30; dorsum bright red; clavus, a pair of 
large spots on corium and pronotum black. 
Male genitalia as in fig. 106. 
Hapsits.—Found breeding on smartweed 
(Polygonum muhlenbergit) in Minnesota 
and Colorado, where it appeared to be 
predacious in part on certain Fulgoridae. 
Illinois Records.—Sixty-two males and 
51 females, taken May 4 to Nov. 10, are 
from Algonquin, Argo, Bath, Canton, Cham- 
paign, Chicago, Galesburg, Grand Tower, 
Havana, Homer Park, Kampsville, Metrop- 
olis, Normal, Palos Park, Putnam, Quincy, 
Savanna, Savoy, Starved Rock State Park, 
Urbana. 
Deraeocoris nubilus Knight 
Deraeocoris (Camptobrochis) nubilus Knight 
(1921-20. 106). 
ApULTs.—Length 4.20—4.80, width 2.00- 
2.30; male more elongate than female, apical 
half of membrane usually heavily infuscated ; 
disk of pronotum fuscous to black behind 
calli, median line pale; femora biannulate 
with apical half pale. Male genitalia as in 
fig. 106. 
Hapsits.—Occurs on pine 
bus) ; probably predacious. 
Known DistrispuTion.—lIllinois, Minne- 
sota, Nebraska, New England states, New 
York, North Carolina, Virginia. 
Illinois Records.—Starvep Rock STATE 
ParK: July 14, 1932, on Pinus strobus, 
Mormicr 6 Park, 14: Sept. 17, 1935, 
DeLong & Ross, 19. WuiITe PINES For- 
EST STATE Park: July 4, 1932, on Pinus 
(Pinus stro- 
KNIGHT: PLANT Bucs, or Miripagz, or ILLINOIS 69 
strobus, Dozier & Mohr, 66 ¢, 579 ; July 
12, 1934, DeLong & Ross, 29. 
Group B 
KEY LO;SPECGIES 
1. Tibiae with fuscous or pale bands.... 2 
Tibiae uniformly pale or yellowish... 7 
i) 
Membrane with a distinctly rounded 
fuscous spot on apical half, fre- 
quently connected at base by a 
fuscous streak extending down from 
between areoles, thus leaving a 
large pale spot on either side of 
middle and on area bordering apex 
OLE CU CUSa mere reer an: cee sate 3 
Membrane usually somewhat infus- 
cated, Dut NOt assabove \. 4s. ee + 
3. Calli solid black, a broad piceous ray 
behind each; in pale specimens, 
calli may be somewhat brownish, 
but, in such cases, median line and 
margins of disk distinctly pale, 
leaving a dark brown ray behind 
each callus; hemelytra with clavus 
and corium piceous, embolium pale 
TALI (hoa ee pee borealis, p. 71 
Calli more or less invaded with brown- 
ish, or pale, distinct rays not appar- 
ent behind calli; hemelytra and pro- 
notum more uniformly colored, 
either dull yellowish brown or dark 
ee fasciolus var. fasciolus p. 70 
4. Rostrum extending slightly beyond 
posterior margins of hind coxae; 
membrane with apical half scarcely 
infuscated; femora pale but with 
two distinct black bands near apex; 
hind tibiae with two fuscous annuli 
Chpasaleial ieee grandis, p. 71 
Rostrum scarcely attaining posterior 
margins of hind coxae; membrane, 
femora and hind tibiae not having 
above combination of characters.. 5 
5. Femora uniformly dark on apical half, 
likewise basal part in darkest speci- 
mens; venter distinctly reddish, 
sometimes dark chestnut red, shin- 
LNG ae lle! pod ea ea: betulae, p. 70 
Femora with apical half distinctly 
banded or entirely pale.... 
6. Second antennal segment provided 
with prominent, pale, erect hairs, 
their length equal to three times 
thickness of segment; pronotum 
