September, 1941 
short, dusky pubescence, hairs somewhat de- 
cumbent on apical half. Legs black, thickly 
clothed with prominent, erect hairs. Venter 
red; genital segment becoming black; a 
large, prominent, erect tubercle present just 
Fig. 151.— Platytylellus fraternus, oe 
above base of left genital clasper, and an- 
other, smaller tubercle directed distad from 
near base of right clasper, fig. 150. 
FEMALE.—Fig. 151. Length 9.10, width 
3.50. Pronotum, length 1.52, width at base 
2.64. Similar to male in form and color. 
This species varies greatly in color, and 
many color combinations have been given 
varietal names. The typical form and va- 
riety rubromarginatus Knight (1923d, p. 
558) have been recognized in Illinois ma- 
terial; varieties regalis Knight (1923d, p. 
559) and discifer Knight (1923d, p. 559) 
have not. 
Host PLanr.—Apparently breeds on su- 
mach (Rhus aromatica). 
Known Distrrisution.—Connecticut, 
District of Columbia, Florida, Georgia, 
Illinois, Maryland, Michigan, Minnesota, 
New Hampshire, New Jersey, New York, 
North Carolina, Pennsylvania, Tennessee, 
Virginia, West Virginia. 
Illinois Records.—BisHor: June 23, 
1906, 1¢, 19. Buiurr Sprincs: June 10, 
1932, Ross & Mohr, 44, 109. Forest 
KNIGHT: PLANT Buss, or MIrRIDAE, oF ILLINOIS 
Pp 
City: June 6, 1905, 1 ¢. Harpin: June 5-9, 
1932, H. L. Dozier, 29. Havana: June 
3, 1918, 19; June 8, 1905, Devil’s Hole, 
26; June 23, 1926, Devil’s Hole, Frison 
& Hayes, 22¢, 129. KEITHSBURG: June 
15, 1932, on Rhus aromatica, H. L. Dozier, 
226 1 Gee MLAKRANDA > J une 226, 11909; 
sweepings, | ¢@. Norma: 1 ¢. 
Platytylellus circumcinctus (Say) 
CEPSHSHRCITCR ICINCGIUS™ Day 1oo2, 
1859, p. 343). 
Mave.—Length 7.10, width 2.70. Head 
width 1.28, vertex 0.71. Antennae, first 
segment, length 0.77; second, 2.34; third, 
1.54; fourth, 0.95. Head red, with front 
and tylus blackish and juga and lora more 
or less black; pronotum red; calli blackish, 
a flaring black ray located behind each callus 
and extending to basal margin of disk; scu- 
tellum and mososcutum red, basal angles 
black; pleura red; sternum reddish, but be- 
coming blackish on either side of median 
line; hemelytra black; embolium, outer mar- 
gin of corium and cuneus red; legs black, 
tinged with reddish near bases of femora; 
venter chiefly red with genital segment and 
variable areas at sides black. 
FEMALE.—Length 7.40, width 2.70. More 
robust than male, but very similar in col- 
oration. 
Known DistrinuTion.—Originally de- 
scribed from Indiana, and now known from 
District of Columbia, Illinois, Maine, Mas- 
sachusetts, New Hampshire, New Jersey, 
New York, North Carolina, Pennsylvania, 
Virginia. 
Illinois Records.— Dotson: June 25, 
1932, Rocky Branch, Frison & Mohr, 12. 
Oakwoop: June 16, 1925, T. H. Frison, 
| Ree 
Dias2os 
Platytylellus insignis (Say) 
CAPSUSINSA CHI SS OAV es (bO52,° ps 225° 1509... 
342). 
Mace.—Length 6.70, width 2.60. Head 
width 1.19, vertex 0.67. Antennae, first seg- 
ment, length 0.74; second, 2.20; third, 1.54; 
fourth, 0.97. General color black, opaque; 
finely granulate; head red, tylus and vari- 
able areas on juga and lora blackish; pro- 
notum red, basal half of disk largely black- 
ish, but broad central area of disk red, this 
red area not forming a clearly defined vitta; 
scutellum red, lateral margins blackish; ven- 
