INSECTS AFFECTING PARK AND WOODLAND TREES 275 



oak as well as in hickory. It ajjpears to prefer limbs from 4 to 6 inches in 



diameter, though it has also been bred from small twij^s. 



Distribution. Ur Horn states that this insect has the same distribution 



as M. barbita Sa\-, which latter he records from Canada, Pennsylvania, 



Georgia and Dakota, and adds that this form is rare in the Southern 



States. This weevil is common in the northeastern states, since it has been 



recorded in a number of local lists, most of them also stating that it breeds 



in hickory. 



Bibliography 



1890 Packard, A. S. U. S. Ent. Com. 5th Rep't, p. 80-81 



Hickory bark borer 

 Scolytiis quadyispi)iosus Sa)' 



Small brown or black beetles, about ' -^ inch in lengtli, make longitudinal burrows 

 from which small legless grubs excavate galleries at nearly right angles. The beetles 

 work also in the leaf petioles, and on the young twigs, causing the wilting of the foliage 

 in midsummer. 



The hickories of the Genesee valley were very seriously injured and 

 many succumbed in 1901 to the deadly work of this bark borer. The 

 damage was brought to public notice by Hon. W. Austin Wadsvvorth, 

 formerly president of the New York State Fisheries, Forest and Game 

 Commission, whose handsome estate of over 5000 acres is adorned with a 

 large number of hickories, many of which have already been killed by this 

 insect. The trouble was first observed on Mr Wadsworth's estate in 1898 

 and 1899 at which time many trees died; others perished in 1900 and large 

 numbers in 1901. A personal investigation late in the fall of 1901 con- 

 vinced us that 90 to 95^ of the hickories in one woodland of about 200 

 acres in question had been killed by this borer. In fact so many of these 

 trees had been destroyed that it was difficult to find one uninjured. This 

 attack extended at least two miles north and south of the village and it is 

 not improbable that a much larger area ma)- have been seriously affected 

 by this pest. 



An examination by Mr M. F. Adams of Buffalo, Aug. 16 and 17, 1901, 

 showed that nearly every hickory was more or less infested or had been 



