SB 
818 
C578 
ENT No. 90. Issued June 18, 1907. 
ited States Department of Agriculture, 
BUREAU OF ENTOMOLOGY, 
L. O. HOWARD, Entomologist and Chief of Bureau. 
THE WHITE-PINE WEEVIL.! 
By A. D. HOPKINS, 
In Charge of Forest Insect Investigations. 
The Bureau of Entomology has been conducting systematic and eco- 
nomic investigations of the weevils infesting the bark of the trunk and 
terminal shoots of conifers in the United States, the results of which will be 
published in the regular technical and popular bulletins; but since 
Fic. 1.—White-pine weevil (Pissodes strobi): a, Adult, smaller figure natural size; b, larva, line at 
left natural length; c, pupa, small! figure of adult showing natural size. (Original ) 
these can not be issued in time to be of service this season, this circular 
has been prepared to give the information which is of immediate prac- 
tical importance in regard to one of the most destructive of these weevils. 
THE INSECT AND ITS HABITS. 
The white-pine weevil is a somewhat elongate, brownish snout beetle, 
4 to 5 mm. in length, having the thorax and elytra marked with irreg- 
ular spots of brown and white scales (fig. 1, @). The winter is passed 
in the adult stage, evidently in the ground. The beetles come out of 
their winter quarters and fly early in May, and after feeding for a few 
days on the bark of the living white-pine terminal shoots deposit their 
1 Pissodes strobi Peck; Order Coleoptera, Family Curculionidie. 
