DEPARTMENT OF AGRICULTURE. 



ally assist in the accumulation of data of the insects present in British Columbia 

 and also of their distribution. This is undoubtedly the best way for the growers to 

 become acquainted with the pests which are causing, or are litely to cause, injury 

 to their crops: this is most important to the growers. Do not think that because an 

 insect is small or not very numerous that it is of no economic importance. It might. 

 - -me future time through increase, cause extensive losses, so do not wait until 

 the damage is done before looking for a remedy. If the growers would undertake 

 to follow out these suggestions they would not only materially help themselves, but 

 greatly assist in the accumulation of important data in the shortest time. 



In sending specimens the following points should be observed: 



In all cases where possible living specimens of th^ insects should be sent enclosed 

 in a strong wooden or tin box to prevent their being crushed in the mails. Larva? 

 should be supplied with a liberal quantity of their food-plant, and in all cases should 

 be carefully packed. 



The name and address of the sender should be written on the outside of the 

 package, and a letter should in all cases accompany the insects sent, giving as full 

 details as possible of the following: The extent of the injury caused; the name of 

 the plant or tree on which the insects were found; if a remedy has been tried to 

 control the insects : if so, the name of the remedy, when applied, and the apparent 

 result. 



Address all communications to the Entomologist, Department of Agriculture, 

 Veruou, B.C. 



Thanks are due to It. C. Treherne. B.S.A.. the Field Officer for British Columbia 

 of the Dominion Entomological Branch, who has kindly read over the manuscript of 

 the follov. _ yet <\ made various suggestions and corrections. He has also 

 furnished the summary of the remedial measures recommended for the control of the 

 strawlxrry-root weevil, which are the result of his extended observation and experi- 

 ments. 



THE APPLE-APHIDES (GREEN APHIS. Kosr APHIS). 



The green aphis of the apple is an annual source of worry to many of our fruit- 

 growers. This pest passes the winter in the egg stage on the smaller branches and 

 ga of apple-trees. The small, black, shiny eggs are easily observed on the trees 

 during the winter and early spring, in favourable seasons the eggs being so numerous 

 make the twigs apiear black. The eggs generally commence to hatch a little 

 before the buds show green and continue to hatch over a period of two or three 

 weeks. The spring forms of the aphides are wingless and are called stem mothers. 

 They are the only ones that hatch from true sexual eggs, all the following genera- 

 tions being born alive. At times during the course of the season winged forms 

 appear which are known as the migrants. These winged forms leave the parent 

 colonies and migrate to other trees, where they commence producing young aphides 

 alive; these young aphides form the summer colonies. Migratory forms continue 

 to appear until the true sexual males and females appear in the fall: the females 

 then deposit eggs until frost stops them. 



THE ROSY APHIS. 



This pest, if allowed to increase, may be considered more serious than the green 

 aphis. They are found principally round the young fruit-clusters, to which they cause 

 re injury, resulting in the fruit remaining small and becoming gnarled and 

 misshaien. As yet these aphides are not very numerous in the Province. 



-,-,,/. it is important that the control of these pests be undertaken when 



the stem mothers are emerging from the eggs and previous to the time when the 



leaves commence to curl. Spray should be applied thoroughly with not less than 



.. pressure, just when the buds are opening. If spraying has been neglected 



until the trees are in leaf, it is important that the spray be particularly directed 



