16 MONTANA EXPERIMENT STATION Bui. 139 



for ensilage. The larvae congregate on the young heads and upper 

 leaves of the plants where they do considerable damage, although 

 this feeding has not affected the later development of the heads, so 

 far as we have noticed. 



Nuttall's Blister Beetle (Cantharis nuttalli Say). The large 

 purple blister beetle which occurs so frequently in gardens and 

 alfalfa fields in Montana was again more than usually abundant. 



Wireworms (Elateridae) are becoming more and more impor- 

 tant as a grain pest in Montana and during the present season severe- 

 injury by wireworms to flax and alfalfa was reported to the State 

 Entomologist. 



A Sunflower Weevil. Family Curculionidae. An unknown 

 weevil, which bored through the stalks of cultivated sunflowers, 

 causing severe damage, occurred in the northern part of the state. 

 An attempt to rear the larvae failed. 



A Strawberry Crown-Borer, (Chittenden 6830, Mont. Rec. No. 

 1853). This borer, which is about the same size and has about the 

 same larval habits as Tylodenna fra§rariae Riley but which is not 

 believed to be that species, was the cause of a severe loss in the 

 young strawberry settings in a locality in the southern part of the 

 state. Specimens have not yet been determined. 



BEES, WASPS, ETC. (HYMENOPTERA) 

 Alfalfa Chalcis Fly (Bruchophagus finicbris Howard). This 

 insect has become well established in Missoula County where con- 

 siderable damage to alfalfa seed has resulted. 



Horn-Tail i Urocerus flavicomis Fab.). A pupa of this insect 

 taken from a redwood water pipe at Divide was received in the lab- 

 oratory, as well as an adult of the same species from Belgrade. 



