598 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



or remaining on the tree will, of course, aid in control. Recently 

 a nearly related fruit-fly has been successfully controlled in South 

 Africa by spraying the foliage with arsenate of lead sweetened with 

 treacle or brown sugar, thus attracting the flies which are poisoned 

 by the arsenate, and this method is worthy of trial both for the 

 cherry licit-fly and apple-maggot. 



