130 
Illinois Records—Mertropo.is: Aug. 17, 
1891, Shiga & Hart, 2° ; AugyZ0n1916; C. 
AsHart elice e169. 
Trigonotylus ruficornis (Geoffroy) 
Cimex ruficornis Geoffroy (1785, p. 209). 
Mave.—Length. 5.30, width: 1-17... Head 
width 0.69, vertex 0.36. Rostrum, length 
1.56, reaching to middle of intermediate 
coxae. Antennae red, first segment often 
more or less pale; first segment, length 0.73 ; 
second, 2.31; third, 1.95; fourth, 0.56. Pro- 
notum, length 0.65, width at base 0.95. Pu- 
bescence short on antennae and legs; dorsum 
practically glabrous. General color pale 
yellowish green to green; pronotum with 
four longitudinal, fuscous stripes, median 
pair extending to apex of scutellum and 
separated by a slender, pale line; membrane 
pale to dusky, veins green. 
FEMALE.—Length 6.00, width 1.34. More 
robust than male, but very similar in form 
and coloration. 
Foop PLants.—Cultivated oats (Avena 
sativa) and closely related wild grasses. 
Known DistrisutioN.—This is a Hol- 
arctic species, widely distributed in the 
United States and Canada, most abundant 
in the Boreal region. 
Illinois Records. — Twenty-two males 
and 64 females, taken May 22 to Aug. 28, 
are from Amboy, Antioch, Chicago, Eliza- 
beth, Frankfort, Galena, Grand Detour, 
Havana, Hoopeston, Macomb, Orangeville, 
St. Anne, Savanna, Starved Rock State Park, 
Urbana, Warren, White Pines Forest State 
Park, Zion. 
Stenodema Laporte 
KE Yoel OUSEE Gis 
Hind femora with three strong spines on 
apical half of posterior margin, fig. 146. 
ped RAPES Stes: Meh aaae trispinosum, p. 130 
Hind femora without spines... 2..,...- 
Fe Sas GG eI vicinum, p. 130 
Stenodema trispinosum Reuter 
Stenodema trispinosum Reuter (1904, pp. 4, 
8). 
Apu.tts.—Length 7.00—-7.50, width 1.70. 
General color pale yellowish to greenish; 
hemelytra sometimes bright green; mem- 
brane pale, veins green. Dorsum clothed 
Ittinois NaturAL History SURVEY BULLETIN 
Vol. 22 Arta 
with short, pale pubescence; antennae with 
prominent pale hairs, first segment more 
thickly clothed. Pronotum thickly and rath- 
er coarsely punctate; median line raised into 
a 
Fig. 146.—Stenodema trispinosum, hind femur. 
a callus. Posterior margin of hind femora 
with three spines, one of them much re- 
duced in size. 
Foop PLAnts. — Occurs on grasses in 
moist meadows; adults hibernate. 
Known DistripuTion. — A _ Holarctic 
species that is widely distributed in the 
northern United States and Canada. 
Illinois Records.—Fifty-one males and 
37 females, taken April 15 to Oct. 6, are 
from Algonquin, Allerton, Alto Pass, Anna, 
Antioch, Apple River Canyon State Park, 
Carbondale, Carmi, Champaign, Chicago, 
Dubois, Elizabethtown, Fern Cliff, Foun- 
tain Bluff, Golconda, Grand Tower, Herod, 
Jonesboro, Kampsville, Lawrenceville, Ma- 
homet, Mount Carmel, Muncie, Palos Park, 
Parker, Pulaski, Quincy, Robinson, Shaw- 
neetown, Snyder, Springfield, Thebes, Ur- 
bana, Vienna, Waukegan. 
Stenodema vicinum (Provancher) 
Miris vicinus Provancher (1872, p. 77). 
ApuLts.—Length 7.00—7.50, width 1.70. 
Femora devoid of spines; pronotum and 
scutellum coarsely and closely punctate, a 
callous median line evident; first antennal 
segment thickly clothed with long pubes- 
cence, second segment with short pubes- 
cence only. General color yellowish to 
greenish with fuscous markings; dorsum 
with a median pale stripe and fuscous areas 
on either side extending from tylus back 
over pronotum, scutellum and hemelytra; 
clavus and inner half of corium dark fuscous 
to blackish in male; antennae reddish, in 
dark specimens dusky red. 
Foop PLANtTs.—Occurs on grasses in 
moist meadows; adults hibernate. 
Known DistripuTion.—This is a com- 
mon species in the eastern United States and 
Canada. | 
Illinois Records.—Fifty-two males, 35 
females and 2 nymphs, taken April 26 to 
Nov. 26, are from Algonquin, Amboy, Apple 
