36 



Provincial Board of Horticulture. 



1897 



Prof. J. B. Smith recommends the use of "dendrolene" for the purpose, as it remains in 

 a viscid condition for a long time. It should be applied on a band of thick wrapping paper put 

 round the trunk, about six inches wide, and spread a quarter of an inch in 

 Su^est^d thickness over the wrapping paper. Tar mixed with oil to prevent its drying, 

 may be used in the same manner, or printer's ink, if the first-named substance 

 is not available, but to be effective must be kept sticky by frequent renewal. Fluffy wool or 

 cotton banded round the tree has also been used with good results, but is not so certain a pre- 

 ventive. 



hatch 



Infested trees should be sprayed with Paris green (see Spray No. 9) soon after the worms 



Apple Fruit 

 Miner. 



The name Apple Fruit Miner has been given to a small larva of one of the tortricid motlis. 

 It feeds upon the pulp of the apple, tunnelling through it in all directions, completely spoiling 

 the fruit, when, as is often seen, sevei-al larvte are present in one apple. 



This pest was very plentiful in Chilliwhack and Mission City Districts the past season, 

 which is the first in which the ravages of the insect havo attracted much attention, though it 

 has been noticed occasionally in previous years. It is also reported from parts 

 of Vancouver and other islands, and is apparently widely distributed, though 

 until the past season not noticed to any extent. 



Its life history has not yet been worked out. Mr. E. A. C. Gibson, of the Department 

 of Agriculture, is, howevur, making a special study in this line. 



So far the only practical way of dealing with the pest, which suggests itself, is the destruc- 

 tion of all infested fruit, and this should be carefully attended to. A thorough cleaning of the 

 orchard, and the burning of all prunings and other rubbish is also recommended. 



It is probable that this is a native insect, as it is found in large numbers on the fruit of 

 the wild crab, so that its natural enemies may be expected to help the fruit-grower in dealing 

 with the pest. 



THE LESSER APPLE-LEAF ROLLER. 

 {a) Larva. (6) Pupa, (c) Moth, {d) Folding case of leaves. 



The caterpillar of the Lesser Apple-leaf Roller {Teras minuta) is a greenish-yellow larva 



smooth, with a pale brown head and whitish markings, affecting the young leaves of the 



terminal twigs, with which the insect forms a protective case. This species 



Lesser Apple- is remarkable in that two of the three broods of moths which appear during 



, leaf Roller. the year are of a bright orange colour, while those of the third b'rood are 



reddish gray. It is an example of what naturalists call dimorphism 



The eggs are laid in the spring, on the unfolding leaves of apple and other trees and 



bushes, the larvse soon hatching and feeding on the young foliage, some of which they roll into 



a protective covering. 



Here they continue feeding for about a month, when they pupate within the folded leaves 

 and a week or so later emerge as small orange yellow moths. These moths lay eggs for another 

 brood of larva?, the moths of which are also yellow, and they in turn lay eggs for a third brood 

 which develops in the fall as reddish gray moths. These winter in sheltered places and in the 

 tollowing spring deposit their eggs as previously stated. 



