3 
period of development of the larve varies greatly. Those more fortu- 
nate in securing a continuous food supply may become fully developed 
before some of the less fortunate ones in the same terminal are one- 
fourth as large, although the eggs from which both came may have been 
deposited at about the same time. There is also a wide range in the 
period of transformation to the pupa and adults and again in the emer- 
gence of the latter. Thus, if the first eggs are deposited about the 8th 
of May at Milford, Pa., latitude 41° 20/, altitude 500 to 1,000 feet, the 
first eggs will begin to hatch about the 14th of May, the first larve will 
be full grown about July 8, the first transformations to the pup will 
take place about the 15th of July, the first adults will begin to emerge 
about July 25, and adults will continue to come out until the first part 
of September. Practically all will be out by September 15. The prin- 
cipal period of emergence, however, is from about the 25th of July to 
the middle of August. 
KINDS OF TREES ATTACKED. 
The white pine is the tree normally attacked, but the weevil is occa- 
sionally found in the terminals or topmost branches of the native and 
cultivated spruces, the jack pine, and very rarely in the pitch pine or 
other eastern pines. The attack is confined to the small to large sap- 
ling and pole stages in the development of the tree. 
DISTRIBUTION. 
Our records indicate that this weevil follows the natural range of the 
white pine from southwestern North Carolina into New Brunswick and 
Canada and westward into Wisconsin. 
EVIDENCE OF ATTACK. 
The first evidence of attack on the living terminals is the exudation 
of fresh, clear, and shining drops of resin. Upon closer examination 
fresh pinhole-like punctures are found in the bark (fig. 3), and at the 
same time the inconspicuous beetles may be found on the terminal ; but 
upon the approach of the observer the beetles will often let go their 
foothold and fall to the ground, where they will feign death. In a few 
days after the first attack the injured terminals will have the resin 
more or less abundant and conspicuous over the greater part of the sur- 
face. The first evidence that the terminals are infested with larve is 
the stunted, unhealthy appearance of the young growth at the tip, 
which will gradually die, the needles turning yellowish and later 
brownish. | 
The time of development of the broods to adults will be indicated by 
the first appearance of dead tips. 
Old work of the weevil is evidenced by the presence of old dead ter- 
