Figure 5 . --Spear-marked 



black moth adult x 2.5. 



Figure 6. --Spear-marked 

 black moth pupa x 5. 

 Overwinters in this 

 stage in leaves on 

 the ground. 



The cooperative reporting system is not presently wholly adequate in de- 

 tecting all pest damage, primarily because of the immense and remote 

 timbered acreage to be kept under surveillance and the relatively few 

 forest land managers available for this task. A partial answer to this 

 detection problem is found in the forest insect aerial survey program 

 of the Research Center. Each year aerial survey flights are made over 

 a large part of Alaska including flight strips over some of the more 

 remote and less frequently visited timber lands. These aerial survey 

 flights are primarily sample strips and not complete coverage and are, 

 therefore, of most value in detecting the more extensive infestations. 

 Being annual flights, they serve also as a guide in year-to-year changes 

 in insect conditions. 



Insect Collecting Expands 



Relatively little is known about most of the forest insects in Alaska; 

 therefore, the collection and rearing of these insects is receiving 

 more and more attention. Collecting of forest insects and their damage 



•10- 



