10 



MASS. EXPERIMENT STATION BULLETIN 189. 



GEOGRAPHICAL DISTRIBUTION. 

 In the Old World. 



The European Corn Borer, or Corn Pyralid, P. nuhilalis Hbn., is widely 

 distributed in central and southern Europe, west central and northern" 

 Asia, China, Japan and the Philippine Archipelago. 



Hiibner, in his original record of the species, gave the habitat as Europe, 

 western Asia, the Himalayas and Assam (British India) . 



A closely allied, if not, indeed, the same, species is reported from the 

 East Indies (8). 



In the United States. 



At the present time^ the European corn borer, so far as is known, is 

 found in the United States only in the counties of Suffolk, Middlesex, 



«JWllV/ L, 



Map showing area in Massachusetts infested by European corn borer, November, 1918. Heavy 

 black line denotes limit of distribution. 



Essex and Norfolk, in the State of Massachusetts. Thirty-four towns 

 are infested, comprising an area of approximately 320 square miles, or 

 about three times the area believed to be infested after the discovery and 

 preliminary survey of the situation in 1917. This area is located imme- 



1 Nov. 30, 1918. 



