100 
AMERICAN SPECIES OF ARADUS (iIEMIPTERA) 
Rostrum short, not or scarcely reaching base of head; the 
l)ronotum more or less distinctly trapezoidal, comparatively small 
and narrow, the latei-al margins scarcely exidanate. This group 
contains a few representatives in both the Old and the New 
\\\)]-lds, which have in common the few distinctly subgeneric 
characteristics mentioned. The coloration is prevailingly dark 
and a majority of the species exhibit pterygo-polymoridiism. 
58. Aradus (Quilnus) niger St;\l (Plate VII, fig. 5S.) 
1X73. Aradus niger Kimin. Hem., 3, p. 137. 
Aradus niger Ileidemanii, Proc. Ent. Soc. Washington, iv, p. 389. 
Dislribulinn.—yiow Scoti.\: VI (Win. T. Davis). Maine: Eastport, 
X, 12 (II. S. Barber); Mount Katahdin, 3000 feet, VIII, 1902 (H. G. Bar- 
l)cr); Orono, IV, 29, 1914, V, 27, 1913 (II. M. Parshley). New Hampshire: 
Crawfords, IX, 20, 1910 (H. M. Parsliley). Massachusetts Northamp- 
ton, X, 8, 1919 (Priscilla Butler); Pelham, VIII, 28, 1919 (H. M. Parshley). 
New York: Hamburg, IX, 22, 1901 (E. P. Van Duzee); Ithaca, 1\ , 10, 
1897; Lake George, VIII, 22, 1893 (J. L. Zabriskie). New Jersey: Lake- 
hurst, IV, 2.5 (Win. T. Davis). District of Columhia: Brightwood, 
X, 22 ((). Ileidemann); Washington, IV, 12 (O. Heidemann). Virginia: 
Palls Church, IX, 19 (N. Banks). North Carolina: Southern Pines, 1, 
1904 (F. Sherman). South Carolina. Colorado: Boulder (C. tteston). 
4'exas: Kirbyville, XI, 17, 1902 (A. D. Hopkins). Mexico. 
Descriplian. — Black; basal expansion of corium, apical angles of con- 
nexival segments, and sometimes their jiosterior margins, very obscuri'ly 
pale. 
Head as long as broad; tylus very short, extending but little beyond first 
antennal segment, laterally comi)re.ssed; impressions of vertex broad, very 
shallow, oval; iireocular and jiostocular tubercles obsolete; antenniferous 
spines short, stout, slightly divergent, without lateral tooth; antennae (fig. 
oXc) very thick, much shorter than head and jironotum together (30 to 43), 
tlie first segment very broad, extending nearly to ajiex of tylus, length of 
second much less than distance between eyes (11 to 17); rostrum barely 
reaching level of posterior margin of eyes. Margins of ])ronotum finely 
granulate. Abdomen oval, the lateral margins almost entire. 
-Macropterous form (fig. .VXd.l). I’ronotum shorter than head (IX to 2.5), 
moderately convc'x, the lateral margins nearly straight, a little reflexed at 
middle; carinae feebly developi'd. Scutelhmi much longer than head (30 
to 2.5), the sides slightly and obtusely raisisl; disc slightly elevated before 
middle. Ilcmii'lytra (cf 9) almost evenly narrowed from basal exjiansions, 
exposing coimexivum, extending to gcmital segnumt, corium about to apex 
of third segment; exocorium moiU'ratvIy expanded at base; mesocorium and 
cndocorium with one or without distinct transveu’se vi'iiis; veins of mem- 
brane rclicul.aic towaid ajicx. .Abdomen oval, less than oiu'-half widi'r than 
pronot um (Oil to 4.5). 
