100 
Iowa, Mississippi, Ohio, Texas, Virginia. 
Illinois Records.—ELIZABETHTOWN: 
May 27-31, 1932, on Robinia pseudoacacia, 
H. L. Dozier, 249. Mason City: June 2, 
1933 5.6s OMVLoht,20) 642 ee eV LONCLE. 
June 8, 1917, 19. Oaxkwoop: June 14, 
1930), 1-H Brison, 1:9 WHitEsHEatH: 
May 30, 1915, 1¢. 
Orthotylus ramus Knight 
Orthotylus ramus Knight (1927e, p. 178). 
This species is suggestive of chlorionis 
(Say), but is somewhat larger, with pale 
yellowish pubescence. 
Mave.—Length 3.90, width 1.50. Eyes 
and shape of head about as in female of 
chlorionis. Antennae yellowish green, last 
segment dusky. General color uniformly 
green or yellowish green, membrane pale, 
veins green. Genital structures distinctive, 
fig. 128, right clasper forked near base and 
forming two long, curved, acuminate arms; 
dorsal margin of genital segment with a 
strong chitinous spine projecting posteriorly. 
FemaLe.—Length 4.10, width 1.54. Very 
similar to male in form, pubescence and 
coloration. 
Host PLants.—Hickory (Carya sp.) and 
pecan (Carya illinoensis); according to 
Johnston these insects feed largely on the 
catkins or male flowers and but very little 
on the pistillate flowers. A single specimen 
was taken in Illinois on wild grape (Vitis 
sp.), but that record is probably accidental. 
Known  DisrrisutTion.—Georgia,  Illi- 
nois, Iowa, Michigan, Mississippi, New 
NY. OLK LL exas: 
Illinois Records.—DanviL_LE: June 8, 
1902, Titus & Kahl, 1 9. ELIZABETHTOWN: 
May 27-3 1932 20 Dozier 24 ee 
Mason Ciry:) June 2, 1933,3C. ©O7sMohr, 
54 1070). SMIONTICELUO me) ure lam 934, 
Frison & DeLong, 2¢. Mounp City: 
Mi aye: 319320) Hee Dozier er eee ee. 
Mounps: May 23, 1932, on wild grape, 
H. L. Dozier, 14. SPRINGFIELD: June 2/7, 
1885--in woods)... A. Hart, 17g 
Orthotylus robiniae Johnston 
Orthotylus robiniae Johnston (1935, p. 15). 
Mae.—Length 3.60, width 1.30. Ros- 
trum slightly surpassing hind margin of 
mesosternum. Antennae yellowish green, 
last two segments dusky. .General color 
uniformly green or yellowish green; mem- 
Ittinois NATURAL History SuRVEY BULLETIN 
Vol. 22, Arta 
brane pale to dusky, veins green. Clothed 
with simple, pale to yellowish pubescence. 
Genital claspers distinctive, fig. 128; right 
clasper forked near apex, forming two short, 
flattened, acuminate arms curving inward 
and upward to near middle of genital seg- 
ment, the apex of each flattened and with 
short, blunt teeth; dorsal margin of genital 
segment with a slender chitinous spine pro- 
jecting postero-ventrally. 
FEMALE.—Length 3.60, width 1.47. More 
robust than male, but very similar in color 
and pubescence. , 
Host PiLant.— Black locust (Robinia 
pseudoacacia). 
Known DistriputTion.—Described from 
Mississippi and now recorded from Illinois. 
Illinois Records.—EicHorn: June 13, 
1934, Hicks Branch, DeLong & Ross, 1 2. 
FAIRFIELD: June 12, 1934, DeLong & Ross, 
2a. Mason City: Juney 21933 
VMohraipan 
Orthotylus notabilis Knight 
Orthotylus notabilis Knight (1927e, p. 176). 
Not taken in Illinois; known from Iowa, 
Kansas, Minnesota, South Dakota; Sas- 
katchewan. Host unknown. 
Orthotylus ulmi Knight 
Orthotylus ulmi Knight (1927e, p. 179). 
Not taken in Illinois; known from Min- 
nesota and New York; breeds on elm 
(Ulmus sp.) and should eventually be found 
in Illinois. 
Orthotylus dorsalis (Provancher) 
Lygus dorsalis Provancher (1872, p. 104). 
Matce.—Length 4.90, width 1.50. Ros- 
trum reaching upon bases of middle coxae. 
Form elongate, costal margins of hemelytra 
nearly parallel. General color black. Cu- 
neus, embolium, base of corium, and rather 
broad area along radius, greenish trans- 
lucent; median line of pronotum frequently 
paler; rostrum, except apex, and legs, green; 
coxae paler; membrane fuscous, veins slight- 
ly paler. Genital claspers as in fig. 128. 
FemMace.—Fig. 129. Length 5.20, width 
1.60. Pale green to greenish yellow; juga, 
arc or spot on either side of front, stripe 
either side of median line, stripe extending 
from inner basal angles of calli to basal 
margin of disk, scutellum except median line 
