The Pentatomidae of Nebraska 5 



Not so common as the following species but like it present over 

 the whole state. Specimens are at hand from Lincoln, Weeping 

 Water, West Point, Neligh and Sioux county. 



Brochymena quadripustulata (Fabricius). 



1775. Chnex 4-pustnlatus Fabricius, Syst. Ent., p. 704. 



1805. Hah's scrrata Palisot de Beauvois, Ins., p. 187, Hem., pi. 11, 



fig. 8. 

 1839. Halys pupillata Herrich-Shaffer, Waits. Ins., IV, p. 104, fig. 453. 

 1874. Brochymena 4-punctata Provancher, Nat. Can., p. 74. 



This form is the commoner of the two species of the genus 

 found in Nebraska. A rather large series of specimens is in the 

 collection from the following localities : Lincoln, Malcolm, Ash- 

 land, " Southeast Nebraska," West Point and Sioux county. 



Tribe PENTATOMINI 

 Genus Peribalus Mulsant & Rey 



KEY TO THE SPECIES 



1. Connexivum usually black with a pale margin; scutellum narrowed at 

 tip; head shorter and narrower limholarius 



I. Connexivum alternated ; scutellum broader at the apex ; head longer and 

 much broader abbreviafus 



Peribalus limbolarius Stal. 



1872. Peribalus limbolarius Stal, Sveiisk. Vet. Handl., X, No. 4, p. 34. 

 1872. Peribalus modestus Uhler, Kept. U. S. Geol. Siirv., V, p. 396. 



Found over the whole state. Specimens are in the collection 

 from Lincoln (March-December), Roca, Malcolm, Weeping 

 Water, Nehawka, West Point, Cedar Bluffs, Sioux county. 



This is our commonest pentatomid in the eastern part of the 

 state. In autumn, it is almost impossible to sweep a patch of 

 grass or weeds without getting a net full of these insects. In 

 some of the specimens the pale margin of the connexivum is 

 scalloped and, in one I have, the dark coloration extends entirely 

 across the margin making a maculation very similar to that in 

 P. abbrez'iatus (Uhler). The shape of the head and scutellum, 

 however, furnish sufficient characters to serve as distinguishing 

 features of the two species. 



233 



