138 
from Connecticut, Maine, Massachusetts, 
New Jersey, New York, Nova Scotia, Que- 
bec, where it occurs on grasses. 
Capsus Fabricius 
KEY TO;SRECLES 
Second antennal segment strongly clavate 
on apical half, thickness nearly twice 
that of frst segment, fehl 544. 
see Caan. SNe. eee ater, p. 138 
Second antennal segment onlv moderately 
clavate on apical half, thickness only 
slightly greater than that of first seg- 
TLC Cy ae ee eee simulans, p. 138 
Capsus ater (Linnaeus) 
Cimex ater Linnaeus (1758, p. 447). 
Mare.—Length 5.70, width 2.60. Head 
width 1.43, vertex 0.75. Antennae, first seg- 
ment, length 0.65, thickness 0.13; second, 
Fig. 154.—Capsus ater, @. 
1.86, strongly clavate, greatest thickness 
0.22; third, 0.73, slender; fourth, 0.91. Pro- 
notum, length 1.21, width at base 2.03. Head 
and body uniformly black, moderately shin- 
ing; the pronotum shallowly, but rather 
ILLINo1is NATURAL History SURVEY BULLETIN 
Vol. 22, Ari 
coarsely, punctate; clothed with pale to yel- 
lowish pubescence. 
Femacte.—Fig. 154. Length 5.80, width 
3.10. Very similar to male in color, pubes- 
cence and punctation. | 
The typical form of this species has 
black legs, variety tyrannus (Fabricius) — 
(1794, p. 177) has yellow brown or reddish 
legs, and variety semiflavus (Linnaeus) 
(1767, p. 725) has the legs, head and pro- 
notum reddish. All three forms and their 
intergrades have been taken together in 
Illinois. All Illinois specimens with the red- 
dish head and pronotum are females. 
Foop PLants.—Canada bluegrass (Poa 
compressa), couch grass (Agropyron rep- 
ens); occasionally other grasses, such as 
timothy (Phleum pratense). 
Known DistrisutTion.—This European 
species is common throughout the eastern 
United States and Canada. 
Illinois Records.—One hundred fifteen 
males, 67 females and 1 nymph, taken May 
13 to Aug. 12, are from Algonquin, Amboy, 
Antioch, Aurora, Bloomington, Chicago, Des 
Plaines, East Dubuque, Edgebrook, Eliza- 
beth, Erie, Fort Sheridan, Frankfort, Free- 
port, Galena, Galesburg, Glendon Park, 
Glen Ellyn, Grayslake, Harvard, Havana, 
Joliet, Monticello, Normal, Oregon, Palos 
Park, Pecatonica, Rock Island, Savanna, 
Starved Rock State Park, Urbana, Willow 
Springs. 
Capsus simulans (Stal) 
Deraeocoris simulans Stal (1858, p. 186). 
This species is distinguished from ater 
(Linnaeus) by its more slender second an- 
tennal segment. It is a palearctic form that 
feeds on brome grass (Bromus inermis) and 
has been found in Alaska, Alberta, lowa, 
Minnesota, Montana, South Dakota, 
Wyoming. Not as yet found in Illinois, but 
it should be taken here eventually. 
Coccobaphes Uhler 
Coccobaphes sanguinareus Uhler 
Coccobaphes sanguinareus Uhler (1878, p. 
401). 
Aputts.—Fig. 155. Length 7.50, width 
3.40. General color bright red with a dusky 
space either side of hemelytral commissure; 
membrane, first two segments of antennae, 
tibiae, and apices of tarsi, black; third an- 
