NINETEENTH EEPOET OF STATE ENTOMOLOGIST 27 



GEASSHOPPERS, CEICKETS (ORTHOPTEEA) 



Mormon Cricket {Anahrus simplex Hald.). A great increase in 

 the abundance of the Mormon cricket was noted this season. Large 

 swarms occurred in Sanders and Flathead counties in western Montana 

 and Judith Basin County and other localities through the central part 

 of the State. The damage caused to alfalfa was small and no dam- 

 age to grain crops was reported. 



Warrior Grasshopper {Camnula pellucida Scudder). This species 

 was again the chief one concerned in western Montana and through 

 some counties just east of the Rocky Mountains. (See discussion on 

 grasshoppers, page 3.) 



Bruner's Grasshopper {Melanoplus hruneri Scudder). Damage 

 to grain by this species in the Shield's River Valley, Park County, oc- 

 curred this season. This is the first record of injury by M. hruneri in 

 this State. 



Two-Striped Grasshopper {Melanoplus hivittatus Say). The two- 

 striped grasshopper showed a great increase, especially along the Yel- 

 lowstone River during the past season. 



TEUE BUGS, PLANT LICE, ETC. (HEMIPTEEA) 



Cabbage Aphis (Breuicoryne hrassicae L.). This insect which was 

 very injurious in 1921 was even more troublesome during the past 

 season. 



Green Apple Aphis (Aphis pomi DeGeer). In some orchards on 

 the east side of the Bitter Root Valley this aphis was rather prevalent 

 and caused some damage. 



Pea Aphis (Illionia pisi Kalt.). During the last of May and the 

 early part of June serious outbreaks of this pest attacking alfalfa oc 

 curred near Park City and Laurel in Yellowstone County. Largo 

 acreages were infested to such an extent that heavy losses seemed in- 

 evitable. Within but a few days of the discovery of the infestations 

 the plants were very much wilted and little hope of their recovery 

 was entertained. However, the larvae and adults of four species of 

 ladybugs became sufficiently abundant to wipe out the aphid infesta- 

 tions within a few days and cut down the loss to the alfalfa to a small 

 part of what was expected. The ladybugs concerned were Coccinella 

 transversoguttata Fald., Hippodamia convergens Guer., Hippodamia 

 5-signata Kirby, and Hippidamia parenthesis Say. 



