354 ENTOMOLOGICAL NEWS [Oct., '15 



So far as the writer is able to determine, 51 species of 

 Pentatomoidea had been recorded from Iowa up to 1898 by 

 Osborn, and since that time but one additional record has been 

 published. Of these 52 species the material now at hand rep- 

 resents 38 species and an additional 5 species which have not 

 before been recorded. Not all the recorded species are men- 

 tioned in the following list, those only being included which 

 may be of particular interest. The new records are also indi- 

 cated in these notes. 



Family CYDNIDAE 

 Subfamily Thyreocorinae 

 Thyreocoris pulicaria German This is the most common species 

 of the family and has been taken in practically every locality vis- 

 ited. At Ames it has been taken in June in great numbers from 

 potato and some damage to the plants may be attributed to it. 



Thyreocoris unicolor Beauv. This species has not before been 

 recorded from Iowa, but of the members of the genus it is sur- 

 passed in abundance only by T. pulicaria. 



Subfamily Cydninae 

 Sehirus cinctus Beauv. This species, heretofore unrecorded from 

 lovi^a, has been found in but tw^o localities and apparently is no- 

 where common. A single specimen was taken in July at Grinnell 

 on wild raspberry. At Iowa City the species has been taken in 

 March from under boards and sticks in a field that had been used 

 as a pasture during the previous season. 



Family PENTATOMIDAE 

 Subfamily Pentatominae 



Coenus delius Say. Widely distributed but nowhere common. 

 Taken in timothy and clover fields. Also found hibernating under 

 sticks and dry weeds in late March and early April. 



Euschistus tristigmus Say. Only fairly common; found usually 

 on hazel. A single hibernating form also has been found. 



Euschistus variolarius Beauv. Next to Peribalus limbolarius this 

 seems to be the most common species of Pentatomid met with in 

 the State. A number of hibernating specimens have been found. 



Hymenarcys aequalis Say. Of this species Osborn says, "Not 

 common." Fifty specimens are in our collection from the follow- 

 ing localities: Iowa City, Bayfield, Monticello, Hampton, Indi- 

 anola and Corydon. We have found the species in practically 

 every month of the year and it is a common hibernating form. 



Hymenarcys nervosa Say. Less common than H. aequalis. Com- 

 monly found hibernating under boards and weeds in pastures. 



