-:9(3 MONTANA EXPEEIMENT STATION Bui. 124 



oats, causing- a considerable loss in the crop, was noticed again this 

 year. It is due to this insect, which attacks the ovary before the 

 head leaves the boot and so injures it that the flower produces no 

 kernel. 



THE TEUE BUC4S, PLANT LICE, ETC. (HEMIPTERA) 



Potato Bug Feeder {Periliis claiidus Say). This strikingly 

 colored Pentatomid was found in many instances feeding on the 

 larvae of the Colorado potato beetle, Leptijtotarsa decemlineata 



Bedbugs {Cimex lectuJaria Linn.). Inquiries concerning the 

 control and eradication of bedbugs were frequent. Our former fum- 

 igation experiments were repeated, and good results were obtained. 



False Chinch Bug (J^^ysiiis ericas Uhl.). This insect was 

 reported many times, being mistaken for the true chinch bug. It 

 becomes exceedingly plentiful at times and is often accused of doing- 

 damage to wheat, though we have no records showing this to be 

 true. It is often the cause ol considerable damage to the younger 

 and tenderer portions of vegetables in gardens. 



Camjjylenchia ciiTvata Fabr. This insect was sent in as doing 

 damage to alfalfa. Alfalfa stems were sent in with the epidermis 

 scraped off and punctures in the stems made in feeding and oviposit- 

 ing. Many of the stems had eggs in them, 'several to one puncture. 



Sugar-Beet Root-Louse {Pemphigus hetae Doane). Wherever 

 sugar beets have been grown, this insect has obtained a foothold. 

 In the Yellowstone Valley the losses are considerable, due to lessened 

 tonnage and a lowered sugar content of the beets. 



Cabbage Aphis {Aphis hrassicae Linn.). Cabbage aphis did not 

 seem so plentiful this year as in previous years in spite of the 

 increase in the number of gardens and the lack of care in a great 

 many of them. 



Apple Aphis {Aphis pomi DeG.). This insect was held some- 

 what in check by the late, cold spring and dry summer so that it 

 was not as plentiful as heretofore. It has always been an important 

 pest of apples but caused little damage this season. 



Cottonwood Aphis {Arctaphis sp.). This insect seems to be 

 spreading rapidly in this State and causing considerable damage to 

 cottonwoods. Where these trees are the principal shade tree the 

 damage becomes rather important. Badly infested trees lose their 



