122 IOWA STUDIES IN NATURAL HISTORY 
broad, stout, reaching to posterior coxae; seccnd segment longest, first and 
fourth subequal, the latter blunt and entirely or aimost entirely brown in 
color. Pronotum yellowish, thickly, irregularly punctured with red; hu- 
meral angles produced into rather sharp, stout spines somewhat flattened 
dorso-ventrally; antero-lateral pronotal margins sinuate, finely crenulate; 
pronotal callouses each bearing one or two small green punctate spots; a 
small spine on each side of anterior pronotal margin. Scutellum with a 
slight callus at basal angles and a narrow, median impunetate line near 
apex which extends over basal portion of membrane. Coriaceous portion of 
hemelytra yellowish or grayish; yellow, sometimes tinged with rufous, the 
punctures a little finer and more scattered than those of pronotum and 
scutellum; membrane bronze brown, surpassing tip of abdomen, the ner- 
vures a little darker. Venter pale clay yellow, impunctate on median line, 
the sides punctured with bright red; basal spine heavy, smooth, extending 
anteriorly to hind coxae; connexivum alternated with orange and black; me- 
dian valve between basal plates in the female genital segment quadrangular. 
Legs pale clay yellow, the apices of tibiae and tarsi darker; femora faintly 
punctured with fuscous; claws tipped with fuscous. Length, 14.5-20.0 mm. 
Width across pronotum, 7.5-10.5 mm. 
This is our largest pentatomid and has a tendency to vary 
somewhat in general coloration from grayish to yellowish; the 
coloration of the punctures varies from red to fuscous and the 
green markings on the thorax may be four and well marked or 
reduced to two very small punctured areas. The species is re- 
corded by Professor Osborn as ‘‘not abundant in lowa’’ and our 
collecting substantiates this statement. Specimens are at hand 
from Iowa City, Robinson and Lake Okoboji. It has been taken 
on wild cherry trees and at Lake Okoboji it was collected in 
clear spaces in or along the edges of woods on oak. At the lat- 
ter place a nymph in the last instar was taken on July 4 and 
other nymphs representing various stages were taken before 
the middle of July. On one occasion while out collecting, two 
half grown nymphs were placed in a small tin box with two 
nymphs of Brochymena quadripustulata Fabr. of about the 
same size. Four days later the box was opened and the Apate- 
ticus nymphs were found to be alive and well while nothing was 
left of the Brochymena nymphs but empty skins. Apparently 
they had been destroyed by the Apateticus nymphs. Apateticus 
cynicus is reported as feeding upon a number of other insects 
and the list, together with something of the food habits in Bo 
eral is indicated by Kirkland, (I. c. 428). 
