H. M. PARSHLEY 
23 
Table of Subgenera and Species 
1. Rostrum extending tteyond base of head; lateral margins of pronotum 
more or less explanate (Suhgenus Aradus Fahricius, p. 29) 2 
Rostrum not reaching base of head; pronotum more or less distinctly 
trai)ezoidal, the lateral margins not exjilanate (Subgenus Quilnus 
St&l, p. 99) ■ 
2. INIedian carinae of pronotum slightly developed, obsolete anteriorly; 
antennae scarcely longer than head, very robust, the third segment 
not twice as long as the hrst oo. cinnamomeus Panzer 
(a) Third antennal segment unicolorous; hemielytra in brachy- 
pterous female with memlirane alisent or vestigial. 
subspecies cinnamomeus tyjiical 
(b) Third antennal segment yellow in apical half; brachypterous 
female with distinct narrow membrane. 
subspecies antennalis subsp. nov. 
Median carinae of jironotum distinct, extending to anterior margin; 
antennae otherwi.se 3 
3. Rostrum short, not extending beyond apical one-fifth of pro.sternum; 
sides of pronotum strongly angulate, concavely arcuate anteriorly 
(fig. 57d) 57. insoletus Van Duzee 
Rostrum longer, extending at least to front coxae; jironotum other- 
wise ■I 
4. Secmid antennal segment about as long as third, both slender and cy- 
lindrical; length more than 8 mm 5 
Si'cond segment generally distinctly longer than third, one or both often 
not cylindrical b 
5. Lateral margins of abdomen almost entire; jironotum widest slightly 
behind middle L aequalis 8ay 
Lateral margins strongly crenate; jironotum witlest well before middle. 
2. crenatus Say 
G. Third antennal segment three-fourths as long as second, yellow in ajacal 
half, both cylindrical; second one-half thicker than third; size large, 
length 11 mm 4. ampliatus Filler 
Antennae otherwise; size usually smaller 7 
7. Third antennal segment enlarged, about one-half thicker than second 
(fig. 3c); length 7.5-9 mm 3. quadrilineatus Say 
ddnrd antennal segment slightly if at all thicker than second 8 
8. Antennae very rolmst, at the widest jioint most distinctly thicker than 
front femora h 
Antennae more slender, often cylindrical, not or but slightly thicker than 
front femora !•) 
9. Pronotum with three jiolished lilack areas liehind middle; head and jiro- 
notum dark, contrasting with jiale hemielytra and abdomen. 
G. ornatus Say 
Pronotum without such areas; coloration generally otherwise 19 
TK-W'S. .\.M. ENT. SOC., XIATI. 
