TWELFTH ANNUAL KEPOET OF STATE ENTOMOLOGIST 199 



Canker Worm {Alsopldla pometaria Harris). This pest again 

 did some injury in Carbon County and apparently is spreading. 

 An article dealing with its life history and control was prepared 

 and was published in the principal newspapers of the county. 



Clothes Moth {Tinea peUionella Linn.). Clothes moths were 

 reported injurious in several localities. A particularly bad infesta- 

 tion was discovered in stored wool samples in one of the college 

 buildings. Larvae were found in abundance and at work in Feb- 

 ruary, although it is often stated that in northern states they are 

 not active during the winter months. The wool was saved by a 

 thorough fumigation with hydrocyanic-acid gas. 



Alfalfa Looper {Auto^rapha £amvra calif OTnica Speyer). 

 This was the most abundant and the most distinctive pest of the 

 year. 



Polyphemus Moth (Telea polyphemus Cramer). This beautiful 

 and showy moth was reared from a cocoon collected at Osborn. 

 The moth is new to our State collection. 



Glover's Moth {Samia £loveri Strecker). The larvae were 

 very abundant at Osborn, feeding upon box elder, elm, willow, etc. 



DIPTEEA 



Lip Bot-Fly {Gastropliilus haemorrhoidalis Linn.). Appar- 

 ently this species is gradually working its way westward. Several 

 years ago it was common only in the vicinity of Glendive but it 

 is now known to occur as far west as Billings. 



Black Flies or Buffalo Gnats (SimuUidae) . Simidiinn vittatus 

 Zetterstedt was taken upon windows in the college horse barn. The 

 bodies were filled with blood and the flies were quite sluggish. 

 Undetermined species were taken upon horses in the Gallatin Moun- 

 tains and in the Yellowstone Valley where they were reported 

 to be so numerous that field workers found it necessary to wear 

 veils. 



Fungus Gnats (Sciara sp.). A quantity of maggots determined 

 as belonging to this genus were sent in with the statement that 

 they were extremely injurious to the roots of potted plants. 



Onion Maggot (Pegomya cepariuw Bouche). This was 

 reported from Silver Bow, Ravalli, Gallatin, and Chouteau Coun- 

 ties. In Bozeman it was not as injurious as in 1913, even in ground 

 where onions had been attacked the previous season. 



