19S MONTANA EXPERIMENT STATION 



cficial bug was observed in several instances to feed upon the fall 

 migrants of the sugar-beet root-louse {Pemphigus betae Doane). 



Leaf Hopper {^Oncoinetopia lateralis). A report of unusual 

 injury by Jassids was received from Flathead County, where corn 

 and potatoes were seriously injured. The insects were said to 

 cluster about the stem of the potato, causing it to bleed so as to 

 n-et the soil beneath the plant. 



Green Apple Aphis (Aphis point DeG.). This has been 

 abundant in all apple-growing sections of the State but not as prev- 

 alent as in 1913. 



Cabbage Aphis {Aphis hrassicae Linn.). This has been very 

 abundant during the past season. .V short article on its control 

 WAS sent to many of the papers in the State. 



Sugar-beet Root-louse {PcnipJiigiis betae Doane). Control 

 measures for this pest were experimented upon as an Adams project. 

 Irrigating so as to keep the soil continually moist not only greatly 

 reduces the number of lice but increases both the tonnage and 

 sugar content. 



Bedbug (Ciine.v lectularius Linn.). Several requests were 

 leceived for information on the control of this household pest. A 

 severe infestation in Bozeman was controlled by two fumigations 

 with hydrocyanic-acid gas. 



LEPIDOPTEBA 



Sugar-beet Webworm (Loxostege sticticalis Linn.). Although 

 enormous numbers of moths appeared throughout the sugar-beet- 

 growing districts in June, comparatively few worms developed and 

 the injury was considerably less than for several years. 



Cutworms {.A'octuidae) . Numerous complaints about cutworms 

 were received from various sections of the State. Eastern Montana 

 suffered most because of an invasion of the army cutworm (Chor- 

 izagrotis ogrcstis Grote). In several instances entire fields of grain 

 and flax were destroyed. 



Imported Cabbage Worm {Pieris rapae Linn.). In the Gallatin 

 Valley cabbage worms were the most abundant in years, and many 

 letters were received concerning them from other parts of the State. 

 An article on their control was sent to man}^ of the newspapers 

 in the State. 



