NEW YORK EXl'KRIMENT STATION BULLETIN 379 



young' trees, as shown at Fig. 5. TJic lice liibcinalc in lliese scars and 

 other similar places on the trees. The winter eggs may also be frequently 

 found among these hibernating lice. In a large majority of cases the 

 infested trees found <.n the iiacking gionnds dui'ing the past two sea- 

 sous by the writer, were harboring ihc liee in these scars on the trunks 

 only, very few of them having infested roots. It is important that 

 nurserymen and buyers take pains to avoid selling or ])lanting stock thus 

 infested. The lice can be easily and quickly killed by touching these 

 infested scars Avilli a clolh saluialcd willi kerosene oil. 



This insect is widely distributed throughout the United States and 

 is well known in Europe. It is probably found in this state wherever 

 ajiples are grown. Our records show^ that it has been either observed 

 by the writer in injurious numbers or reported to the Station from the 

 following counties: Chautauqua, Monroe, Wayne, Ontario, Yates, Sen- 

 eca, Caj'uga, Columbia, Dutchess, Queens and Suffolk. 



BORERS. 



This group includes a number of the most serious pests in nursery and 

 orchard trees. By "borers" is usually meant those insects which bore 

 into the roots, trunks or branches of the infested plant. As the larvre 

 are most active in the injurious work the term refers especially to them. 

 The only species of borer which was found doing serious injury in the 

 nurseries is the peach tree borer. 



THE PEACH TREE BORER. 



HaiDiina exitiO!<a. Say. 



This insect is also discussed at length in the Annual Keport of this 

 Station for 189G, pp. 559-567, and hence need be only briefly mentioned 

 here. 



The nature of the insect is shown at Plate VI, figs. 1 to 3. The injury 

 is done by the larvae, which bore into the trunk or roots, feeding largely 

 on the sapw^ood. One of the larvie is shown at Fig. 1. At Fig. 2 the pupa 

 (a) and male (b) and female (c) moths are shown. Both figures are from 

 photographs showing the originals natural size. At Fig. 3 an upper 

 and side view of one of the larvie slightly enlarged is show^n. 



In some sections of the state this insect is usually very abundant. The 

 borers were much less frequently found the past season than the season 

 previous. 



This insect has also a w ide distribution and is well known in all parts 

 of the state. We have found it especially abundant in Monroe, Wayne, 

 Ontario, Seneca and Cayuga counties. 



CASE BEARING INSECTS. 



Under this head may be included two species of insects which have 

 done serious injury in the nurseries and orchards, especially the latter, 

 in this state during the past two seasons. These are commonly known 



