posjtoffice address on packages. Specimens sent through the 

 mail should be carefully enclosed in a package which is not easily 

 broken or crushed, such as a wooden or tin box^. 



The food plants of these caterpillars in badly infested areas 

 include the foliage of practically all deciduous trees. The Gypsy 

 caterpillars usually attack forest and shade trees, while the Brown 

 Tail prefers the foliage of the pear and apple. 



The most marked difference in the life histories of these two 

 insects, as noted in these illustrations^, is shown in their winter 

 habits. The Gypsy passes the winter in the egg, the Brown Tail 

 as a young caterpillar. The distinct and characteristic markings 

 of the full grown caterpillars and moths enable one to determine 

 identities fairly well. 



Methods of Distribution. The Brown Tail moth is best 

 adapted by nature to spread over a wide area, for the female 

 moth can fly to considerable distances, whereas the female Gypsy 

 moth has very slight use of its wings. The usual methods 

 whereby the latter are distributed are by the falling of the cater- 

 pillars onto passing vehicles (horse, automobile, trolley), they 

 being thus borne considerable distances. The same means, of 

 course, serve the Brown Tail as well. 



Be on the watch for Gypsy and Brown Tail moths, es- 

 pecially in Windsor and Windham Counties, along the lower 

 Connecticut River towns and the Massachusetts border. 



Every New England State but Vermont now harbors these 

 pests. The earlier they are combated, the shorter and more 

 successful the battle. 



Study the illustrations and descriptive matter and com- 

 pare with specimens you may find. 



Notify the Experiment Station, Burlington, Vt., if you 

 think you have found either. Send specimens enclosed in a 

 secure package, bearing name and address of sender. 



' Sending insects by mail improperly packed is an offense against 

 postal laws. 



= Furnished through the courtesy of the New Hampshire Experi- 

 ment Station. 



