195 



have taken it in corn fields in Illinois. It is also known to attack insects. 

 The species is common in th(; South, but is rarely seen in central Illinois, 

 although it has a[)peare(I in injurious niimbf;rs on wheat as far north as 

 Minnesota. It may be known at once from other stink-bugs by the 

 forward direction of the sharp shoulder-spines. 



EuscHisTus nssiLis Uhl. 



We have taken specimens (A this conunon Illinois "stink-bug" on corn 

 — in one case feeding on corn ears — and on various other i)lants. It has 

 been known to cause considerable injury to wheat. The adults have been 

 taken by us from April 20 to December 8, most frequently in June and 

 .July, and again in Septemlx^r, thus indicating two broods in a season. 

 The front margin of the head is slightly notched, and the abdominal 

 segments have no median black spots in either sex. It occurs quite 

 gen(!rally throu.tihout the IJnit(;d States from Muiiu; to (Jahfornia. 



EuscHiSTUS SKHvus Say. 



Ashmead has reported finding this species on corn in Morida. He 

 supposed it to be predaceous, but it was more probably feeding, in part 

 at least, upon the corn. The beak is quite slender, suittnl t<j plant-feed- 

 ing, and very unlike the strong beak of the distinctively predaceous 

 s]jeci(!s, such as Podisus. It inha?Mis the Southern States, anrl has not 

 occurred in our Illinois collections. It is closely related to E. fissilis, 

 but th(! front margin of the head is not notched. As in /issilis, the 

 shouldf^rs are rounded or very obtusely angled. 



EuscHisTUS VARioLARiu.s Pal. Jicauv. 



This is one of our commonest species of "stink-bug" (Fig. 190). 

 It is known to suck the sap from a great variety of plants, including 

 corn, and by reason of its large 

 size and abundance it fre- 

 quently does some noticeable 

 injury to the plants infested. 

 W(! have repeatedly found it 

 on corn, sucking sap from the 

 leaves, from the husks and 

 kernels at the tip of the ear, 

 and from other parts of the 

 |)lant. 



In KcMitucky it has been 

 found feeding at the base of 

 tobacco leaves, causing them "^ 



to become limp and the stalk' -- >- 



+ /. TirlH ., .wl fr,n T ,w,„^ « r.r ,,r. ^'^''- ^ ^^ " EuHckiHluH varMariuH J''our times 



to wilt and lall. Lugger says natural «i/.e. 



V 



