12 



MONTANA BULLETIN 200 



BARLEY 



In 1925 only one report was received of insects injuring barley. About the 

 middle of May one grower at Warren reported that wireworms destroyed about 

 one-third of his crop. There were no reports during 1926. 



Common Name 

 Currant fruit fly 



CURRANTS 



Scientific Name 



Epochra canadensis F. Loew. 



Imported currant borer Synanthedon tipuliformis Linn. 



Currant aphis 



Myzus ribis Linn. 



Plant lice 



Cottony maple scale 



Cone borer or mite 



Aphididae 



Pulvinaria vitis Linn. 

 Sp. undetermined 



Locality 



Date 

 1925 1926 



Avon Jan. 21 



Seines Feb. 3 



Canyon Creek Feb. 23 



White Sul. Spr. July ■: 7 



As can readily be seen by the above table., the currant fruit fly has been by 

 far the most outstanding insect affecting this crop during the past two years. 



CHERRIES 



Pear slug 



Mites 



Maggots 



Saw-fly 



Caliroa cerasi Linn. 



Sp. undetermined 

 Sp. undetermined 

 Sp. undetermined 



Joliet 



Joliet 



Fromberg 



Edgar 



Joliet 



Plains 



Billings 



Helena 



Stevensville 



Joliet 



Julv 10 



July 14 



June 28 

 July 7 

 July 7 

 Sept. 17 

 Nov. 11 



July 1 



Dec. 12 



Jan. 20 



During the past two years there was no unusual insect damage to cherries. 

 Perhaps the pear slug was more numerous than normally. 



