460 Report of the Entomologists op the 



wherever apples 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, Mon- 

 roe, Wayne, Ontario, Yates, Seneca, Cayuga, Columbia, Dutch- 

 ess, Queens and Suffolk. 

 t BORERS. 



This group includes a number of the most serious pests in nur- 

 sery and orchard trees. By " borers " is usually meant those in- 

 sects which bore into the roots, trunks or branches of the in- 

 fested plant. As the larvae 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 Boreb. 

 Sannina exitiosa Say. 

 This insect is also discussed at length in the Annual Report 

 of this Station for 1896, pp. 559-567, and hence need be only 

 briefly mentioned here. 



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

 The injury is done by the larvae which bore into the trunk or 

 roots, feeding largely on the sapwood. One of the larvae is shown 

 at Fig 1. At Fig. 2 the pupa (a) and male (6) 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 larvae slightly enlarged is shown. 



In some sections of the State this insect is usually very abun- 

 dant. The borers were much less frequently found the past 

 season than the season previous. 



This insect has also a wide distribution and is well known in 

 all parts of the State. We have found it especially abundant iu 

 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 



