February,'22] hadley: Japanese beetle 63 



Pennsylvania, a total of approximately 270 square miles. While the 

 spread during the past year seems to have been considerable, the in- 

 festation as a whole still remains a single compact unit, speaking in 

 terms of area. That is to say, there have not been found as yet any 

 isolated infestations remote from the main infestation. During the 

 past season long distance scouting was carried on throughout the 

 season and over a comparatively large area, but as a result of this 

 scouting no outside infestations were located, Therefore, we believe 

 that the spread to date may be considered to be the natural normal 

 spread of this imported insect in its new environment. On the other 

 hand, in view of the many avenues of distribution open to an insect 

 having the characteristics and habits of the Japanese beetle, it would 

 not be surprising if additional infestations should be found within the 

 next year or two at some distance from the main infestation. During 

 the scouting season it is planned to continue outside long distance 

 scouting and make every effort to locate remote infestations if any 

 occur. In this connection the writer wishes to urge upon all official 

 Entomologists, particularly those located in the States adjacent to the 

 present infested area, the importance of their cooperation in locating 

 and reporting to the Japanese Beetle Laboratory any findings of the 

 Japanese beetle or of insects which they have reason to believe may 

 be the Japanese beetle. 



Quarantine 



During the past season the quarantine on farm products has been 

 maintained. This quarantine, (No. 48 of the Federal Horticultural 

 Board,) restricts the shipment of farm products and nursery, ornamental 

 and greenhouse products. During the summer of 1921, the iDroduct 

 most liable to carry the beetle was sweet com. Over 200,000 baskets 

 of this product were examined during the summer and over 5,000 

 beetles removed from the com. A great deal of time was als ) spint 

 in inspecting other products but it would appear that the chances of 

 products other than com distributing the beetles to any great distance 

 are no greater than other avenues of escape which are impossible of 

 control. In view of this fact a revision of the quarantine regulations 

 has been m.ade, effective January 1, 1922. The revised quarantine 

 restricts the m-ovement of sweet com, lettuce, cabbage, grapes, hay and 

 straw, among the farm crops. The area quarantined for these products 

 comprises the Townships of Palmyra, Cinnaminson, Delran, Riverside, 

 Chester, Mount Laurel, Northampton, Evesham, Lumberton, West- 

 hampton, Burlington, Willingboro, and Beverly in Burlington County: 

 City of Cam-den, Townships of Pensauken, Delaware, Hadden, and 

 Center, and the Borough of Magnolia, in Camden County, in the State 



