138 INSECTS INFESTING THE CHERRY TREE. 



immaculate, anal shield a little darker than body ; head small, 

 round and pale-yellow ; eyes black ; twenty legs. 



The egg is probably laid by the parent fly on the cherry 

 when the latter is about the size of a pea ; as soon as hatched 

 the larva commences to feed upon the skin of the fruit and 

 eats in toward the pit or stone. In the young fruit it eats 

 into the pit, but when the cherry is more than half grown it 

 seldom attacks the pit. ^Mlen the larva is full grown it evidently 

 leaves the fruit to prepare to go through its change (metamor- 

 phosis) in the ground or elsewhere. The specimens were received 

 too late in the season to learn the natural history of this pest ; 

 and failing to rear the perfect insect, it is only by analogy that 

 its history can be referred to, therefore its having twenty legs 

 indicates that it is the larva of a saw-fly, and as the full grown 

 larva is only three lines in length, the j)erfect insect or fly 

 must be very small. 



Remedy. — The natural history of this insect being unknown 

 to me at present, I can only recommend the picking off of the 

 trees all infested fruit and boiling it, or otherwise making 

 such use of it as will destroy the insect which it contains. It 

 would be beneticial to the tree to spray it when dormant with 

 No. 11 or 12. Or No. 13 — iUv pounds to each six gallons of 

 water used. 



