September, 1941 
Trigonotylus Fieber 
Kine TOrsPE GIES 
1. Posterior tarsi and apices of posterior 
tipiae black..../........ tarsalis, p. 129 
Posterior tarsi and apices of posterior 
Meets Dale orsreddish,.)292 0... a... 2 
2. Length of first antennal segment less 
than width of head across eyes..... 
eee eS ans brevipes, p. 129 
Length of first antennal segment ex- 
ceeding width of head across eyes... 3 
3. Clavus and corium roseate; second an- 
tennal segment pale to yellowish. .. 
TR ics Se a). pulcher, p. 129 
Clavus and corium pale to dusky or 
greenish; antennae reddish.....:.. 
Oe ruficornis, p. 130 
Trigonotylus pulcher Reuter 
Trigonotylus pulcher Reuter (1876, p. 59). 
Mate.—Length 4.50, width 0.99. Head 
width 0.62, vertex 0.31. Rostrum, length 
1.38, reaching to near apices of middle coxae. 
Antennae, first segment, length 0.64, thick- 
ness 0.15, pale, tinged with roseate; second, 
length 1.49, pale; third, length 1.31, pale; 
fourth, length 0.65, brownish. Pronotum, 
length 0.52, width at base 0.86. General 
color pale, clavus and corium tinged with 
roseate; two brown, longitudinal lines on 
middle of pronotum and scutellum; a roseate 
to fuscous line present on either side of 
head along inner margin of eye and ex- 
tending to basal margin of pronotum. 
FEMALE.—Length 5.40, width 1.25. More 
robust than male, but very similar in color- 
ation. 
Known DistripuTion.—Recorded from 
Minnesota south to Texas and eastward. 
linois Record—Anna: Oct. 11, 1933, 
Frison & Ross, 19. 
Trigonotylus tarsalis (Reuter) 
Callimiris tarsalis Reuter (1876, p. 60). 
Mare.—Length 5.40, width 1.12. Head 
width 0.75, vertex 0.43. Rostrum, length 
1.38, reaching nearly to posterior margin of 
sternum. Antennae, first segment, length 
0.80, green; second, 2.34, green, apical half 
pink; third, 2.60, pink; fourth, 0.95, pink. 
Pronotum, length 0.65, width at base 0.97. 
Pubescence very short, dorsum nearly gla- 
brous; tibial spines weak. General color 
KNIGHT: PLANT Bucs, or MirIpDAE, oF ILLINOIS 
129 
medium green to bright green; apices of 
posterior tibiae, and tarsi, black; antennae 
pink to reddish on apical half; membrane 
pale, veins green. 
FEMALE.—Length 6.30, width 1.51. More 
robust than male, but very similar in form 
and coloration. 
Foop PLantT. — Slough grass 
michauxtana). | 
Known DiIstripuTion.—Connecticut, 
Illinois, Iowa, Kansas, Manitoba, Massa- 
chusetts, Minnesota, New Hampshire, 
North Dakota, South Dakota, Texas, Wis- 
consin. 
Illinois Records.—Fifty-five males and 
122 females, taken May 15 to Oct. 1, are 
from Allerton, Antioch, Argo, Beach, Bond- 
ville, Champaign, Chicago, Grayslake, Mo- 
line, Momence, Oak Lawn, Ogden, St. Anne, 
Savanna, Seymour, Urbana, Watseka, Wau- 
kegan, Zion. 
(Spartina 
Trigonotylus brevipes Jakovlev 
Trigonotylus brevipes Jakovlev (1880, p. 215). 
Mate.—Length 4.10, width 0.95. Head 
width 0.60, vertex 0.28. Rostrum, length 
1.25, reaching to near tips of middle coxae. 
Antennae, first segment, length 0.51, thick- 
ness 0.13, usually greenish yellow, some- 
times pink, clothed with short fuscous pu- 
bescence; second, length 1.51, cylindrical, 
0.07 thick, usually pale yellowish, sometimes 
pink, clothed with very short, minute pu- 
bescence ; third, length 1.30, pallid to dusky; 
fourth, length 0.47, fuscous. Pronotum, 
length 0.47, width at base 0.82, basal mar- 
gin broadly concave; disk minutely rugulose, 
median line slightly elevated, pallid, dusky 
on each side; calli distinct, a foveate punc- 
ture on each inner angle. Dorsal surface 
nearly glabrous, claval vein and brachium on 
corium, distinctly elevated. General color 
pallid to greenish yellow; hemelytra_ sub- 
translucent; cuneus nearly clear; membrane 
sometimes dusky, veins pale to greenish. 
FEMALE.—Length 4.85, width 0.96. Slight- 
ly larger than the male but very similar in 
form and coloration. 
Foop PLants.—Bermuda grass (Cyno- 
don dactylon) and perhaps related grasses. 
Known DistTriputTion.—Alabama, Ari- 
zona, California, Colorado, Connecticut, 
Florida, Georgia, Illinois, Kentucky, Mary- 
land, New York (coastal), North Carolina, 
South Carolina, Tennessee, Texas, Utah, 
Virginia; also Cuba and Mexico. 
