22 . MONTANA BULLETIN 150 



Lesser Migratory Locust {Melcmoplus ailanis Kileyj. This species 

 predominated in outbreaks through the eastern part of the State. 

 (See general discussion, page 3.) 



Two-Striped Grasshopper {Melanoplus hivattatus Say). This 

 species occurred along with M. atlanis through central and eastern 

 Montana but was of much less importance. 



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



Bedbug {Cimex lectularius L.). This well-known pest continues 

 to be a source of complaint in rural communities. Several instances of 

 infestations in garages where night help was quartered came to our 

 attention. 



False Chinch Bug {Nysius ericae Schilling). The presence of this 

 insect within the ears of corn in Prairie County in September led to 

 the belief that it was the true chinch l)ug. No appreciable amount of 

 damage was reported. 



Elm Gall Louse (Schizoneura americana Riley). There was the 

 usual number of complaints concerning injury by this insect from all 

 parts of the State where the elm has become an important shade tree. 



Cabbage Aphis {Brevicoryne hrassicae L.). There was a notice- 

 able increase in the abundance of this pest over 1920. 



Green Apple Aphis (Aphis pomi DeGeer). These tiny green in- 

 sects were in evidence in many orchards of tlie Bitter Root Valley 

 but nowhere did they appear to be doing material damage. 



Oyster-Shell Scale {Lepidosaphes nlmi L.). Comparatively little 

 injury was noticed in the Bitter Root Valley, although occasional trees 

 were found so badly infested that some of the branches were dead and 

 even the fruit itself was attacked. 



BUTTERFLIES AND MOTHS (LEPTDOPTERA) 

 Pale Western Cutworm (Porosagrotis orthogonia Morr.). See 

 page 11. 



Other Cutworms. Euxoa ochrogaster Gn., the red-backed cut- 

 worm, caused a small amount of damage in Lewis and Clark County 

 in late June. E\ixoa tristicula Morr. occurred early in the season in 

 March and April, feeding on Russian thistle in northern IMontana. 

 Moths of Euxoa pallipennis Sm. occurred in greal numbers along with 

 moths of Porosagrotis orthogonia Moii-. in August and September. No 

 food plants of Euxoa pallipennis were determined as no larvae were 

 collected. Noctua clandestina Harris, which is believed to feed mostlv 



