The Bud Moth. 43 



July when they died that they certainly should have attained full 

 maturity during early autumn." Again, in 1892, Mr. Fletcher says in 

 his Report for 1891: "In 1885 I found in Nova Scotia some small 

 larvjB enclosed in silken cells, which they had spun in the roughness of 

 the bark of fruit spurs upon apple trees. Upon one or two occasions 

 last year the method of passing the winter of this insect was discussed 

 at scientific meetings, but there seemed to be doubt about the matter. 

 This winter I have made careful search upon apple trees and upon 

 some twigs, which were sent to me by Dr. Young, bearing the larvae 

 of a small Coleophora. In every case I have been able to find the 

 larvae of this (Bud) moth enclosed in small silken cells, covered over 

 with, apparently, the excrement of the caterpillar, so that I am con- 

 vinced that for this part of Canada and Nova Scotia this is the usual 

 mode of passing the winter." 



From these extracts it will be readily seen that there is considerable 

 difference of opinion in regard to the stage and manner in which this 

 pest passes the winter. Especial attention has been given to this part 

 of its life history here at the Insectary. 



During 1891 many observations were made upon the larvae 

 working upon apple trees on the University grounds. The work 

 of the larvae in their early stages under their webs upon the 

 leaves progressed as discussed under the habits of the larvae dur- 

 ing the summer. By September 15, however, it became apparent that 

 the larvae were feeding but little, if any, and several of the tubes under 

 the webs did not contain larva;. By November 1, not a larva could be 

 found in nearly one hundred infested leaves taken from various parts of 

 the trees. What had become of the larvfe ? By very close scrutiny 

 of the twigs which bore infested leaves, it was found that in almost 

 every case there was a small brown larva snugly ensconced in a little 

 silken cell made in some angular roughness of the bark. These larvae 

 could not be distinguished from those which had been in the tubes only 

 a few days before. 



To leave no room for doubt that these were the larvae of the Bud 

 Moth, several twigs were enclosed in nets. These larvae did not leave 

 their silken cases or hibernacula until about May 15, 1892. Their work 

 during May and June was similar to that of Bud Moth larvae on other 

 trees. July 5, 1892, some of these larvae had pupated, and the moths 

 emerged July 15. They were typical Tmetocera ocellana, thus prov- 

 ing that the larvae which were found in the silken hibernacula were 

 those of the Bud Moth. These observations also go to show that the 

 larvre do not hibernate in their tubes upon the leaves where Dr. Fernald 

 left them in the fall. 



