— 109 — 



present state of our knowledge no mode of preventing the ravages 

 of this pest can be suggested except the destruction of each indi- 

 vidual that is found. 



II. INSECTS INFESTING THE APPLE. 



THE APPLE BUCCULATRIX. 

 Bucculatrix pomifoliella. 



Order LEPidoptera ; family Tineidae. 



Small white cocoons, ribbed longitudinally, and occurring abundantly side 

 by side on the lower surface of the twigs of apple trees. Fig. 6. 



It is evident that this pest of the apple is becoming very abun- 

 dant in certain parts of this state. We have received during the 

 past year many inquiries regarding it ; and the specimens that 



have been sent us show that the insect is 

 present in great numbers where they were 

 collected. 



A short account of this insect was published 

 by Clemens twenty }^ears ago ; * and many 

 other articles concerning it have appeared 

 in various publications since that time. But 

 the most careful study that has been made 

 of the species was conducted by Dr. A. E. 

 Brunn in 1882 while a student in this de- 

 partment of Cornell University. The results 

 of Mr. Brunn' s studies were published by 

 this station ; J but the report containing them 

 is now out of print. It seems best, there- 

 fore, considering the importance of the sub- 

 ject and the interest that is felt in it, to give 

 in this place a short review of what is known 

 FlG . 6.— Twig of apple regarding it. The accompanying figure has 

 with cocoons of Buccu-been prepared especially for this Bulletin. 

 latrix. The larva and adult of this insect are mi- 



nute creatures, and ordinarily escape observation. But the cocoons 



* Proceedings of the Academy of Natural Sciences of Philadelphia, i860, 

 p. 211. 



t Second Report of the Cornell University Experiment Station, 1SS3, p. 

 157-161. 



