Family PENTATOMID^ 

 Subfamily Graphosominge 



Podops cinctipes Say. This and the following species were always found 

 in damp situations and were not abundant at any time. The long grass 

 about the swamp at Hayward's Bay proved to be the best collecting 

 ground for members of this subfamily although but a single specimen of 

 the present species was taken. 



Podops parvulus Van Duzee. This species has not before been recorded 

 from Iowa. Seven specimens are at hand from Lake Okoboji and Esther- 

 ville. The small size, short, acute humeral tooth and somewhat explanate 

 juga will serve to differentiate this species from P. cinctipes. Another 

 specimen of P. parvulus has been taken at Solon, Iowa, by L. L. Buchanan. 



Subfamily Pentatomin© 



Brochymena quadripustulata Fabr. In the Okoboji material two half 

 grown nymphs, taken July 4, represent this species. The specimens were 

 taken from low willows along the Beck canal. 



Perihalus limholarius Stal. Surprisingly few specimens of this usually 

 common species of pentatomid were taken in northwestern Iowa, the sum- 

 mer 's quota amounting to but nine individuals; three of these are nymphs 

 taken during July and August. 



Trichopepla semivittata Say. One specimen of this widely distributed 

 species was taken at Hayward's Bay. The species appears to be nowhere 

 common in Iowa and most of the specimens at hand have been collected in 

 the southern portions of the state. 



Mormidea lugens Fabr. Four specimens only were taken and all at Lake 

 Okoboji. One of these is a nymph about half grown and taken July 17. 

 The few specimens collected were all swept from blue grass on small cleared 

 areas in the woods. 



Euscliistus euscliistoides VoU. Five of the twelve specimens secured at 

 Lake Okoboji, Sioux City, and Estherville are nymphs. The species was 

 found most often in low cultivated or semicultivated areas containing more 

 or less timothy and red clover. 



Eu^chistus tristigmu^s Say. This species was one of the most abundant 

 woodland forms found in the region, occurring commonly in or along the 

 edges of wooded areas on wild raspberry. Forty specimens were taken 

 three of which are half grown nymphs. Other nymphs also were seen but 

 not retained. 



Euschistus variolarius P. B. This species did not prove to be as abund- 

 ant in northwestern Iowa as in most places in the state where it is perhaps 

 the most common of any of our pentatomids. Forty-seven specimens in all 

 were taken and fifteen of these are nymphs representing all stages of de- 

 velopment. At Sioux City in July the present species was found more 

 common than in other localities visited. Other localities are Lake Okoboji, 

 Sibley, Emmetsburg, Clarion, Silver Lake, and Forest City. 



Euscliistus ictericus Linn. Only two specimens of this species which very 

 closely resembles E. variolarius were taken in northwestern Iowa, one at 

 Lake Okoboji the other at Sioux City. Both present the irregular, eal- 



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