SEVENTH ANNUAL REPORT STATE ENTOMOLOGIST. 53 



seasons spent in IMontana l)y the writer, the sumimer of 1909 was 

 the first one in which tussock moths were common in the state, 

 as indicated l)y sp^ecimens sent in l)y corres]>ondents. This very 

 striking species was received several times in the egg stage from 

 the western part of the state. The writer had seen it in Montana 

 orchards a few times pre\-iously. 



The Buffalo tree-hopper {('errsa hnha/iis Fabr.) — Twigs of 

 apple showing the characteristic markings prodttced by this 

 insect in inserting its eggs under the bark have been received with 

 fair frequency at the Experiment Station. It is more common in 

 the eastern part of the state. 



Blister mite on apple ( Erioplujes ])yri Nal.) — State Horticultural 

 Inspector M. L. Dean has called our attention to th:e occurrence 

 of this pest in certain orchards near \'ictor during the past season. 

 It occurs at that place both on apple and motintain ash. 



The onion maggot {I'horlna cc])aTjnu Meigen.) — Maggots in 

 young onions sent in from ( ireat Falls and reared to the adidt con- 

 dition are of this species. Onions are not an important crop in 

 Montana and this insect has not attracted much attention. 



The Bronze apple tree borer (Magilalis aenescens LeC.) — This 

 species appears to be well established in the Bitter Root valley but 

 has not been very injurious. It was first found in Montana several 

 years ago on the orchard of Mr. Bandman near Missoula. It has 

 since been found at points in the Bitter Root valley. 



Scale on Mountain Ash {Aspidiotns sp.) — We have specimens 

 of this insect found on mountain ash from, Billings and Missoula. 

 In both cities it became very abundant on individual trees. It has 

 not spread to apple trees. 



