which has neither commercial nor exthetic value. Instances 

 where this has been caried so far that from 25 to 100 leaders 

 are striving for supremacy, may be seen by the thousands 

 throughout southern Maine. Indeed, in this region., only a very 

 small per cent of the young pines escape injury by the weevil. 



While the pine weevil shows a decided preference for white 

 pine (Pinus strobus L.) over all other species of trees, it will 

 occasionally attack other species of pine such as the jack pine 

 (Pinus banksiana Lamb) and true pitch pine (Pinus rigida 

 M n) and several species of spruces including the red spruce 

 (Picea rubens Sarg.) and the Norway spruce (Picea excelsa 

 Link.) Plantations of Norway spruce, especially, are often sub- 

 ject to great damage second only to white pine in this respect, 

 Young trees from 4 to 20 feet in height, are most subject to at- 

 tack, although less commonly pines well over thirty feet high 

 may be injured by the weevil. It also shows a decided pref- 

 erence for trees growing in plantations or in open stands. Thus 

 it is that the most noticeable damage usually occurs in pure 

 plantations of white pine or Norway spruce or in the younger 

 volunteer growth in pastures, along the borders of woodlands or 

 .along roadsides. Where white pine occurs under cover in wood- 

 lots it is nearly exempt from attack and injury. 



Methods of Control. The white pine weevil is best con- 

 trolled by removing the infested leaders and so treating them as 

 to destroy the contained grubs and young beetles before they 

 have an opportunity to emerge and escape. This is most easily 

 accomplished by burning, and should be done before July 1st. 

 3y this procedure all of the new brood is destroyed, but unfort- 

 unately all of its parasitic enemies are also killed. A better 

 method, but one involving more trouble, is that recommended 

 by Dr. A. D. Hopkins, of the U. S. Bureau of Entomology. He 

 recommends that the collected leaders be confined in tight bar- 

 rels closed at each end with ordinary wire screen. This allows 

 the smaller parasites to escape. By the time cold weather be- 

 begins, all of the weevil will have emerged from the leaders earlier 

 collected, and will have died, so that the screens can then be 

 removed and the barrels and their contents left until the succeed- 

 ing June to allow the emergence of the larger parasites which 

 develop later. The leaders collected later in the season those 

 wilting after the middle of July should either be burned at 



