THE PLUM CURCULIO. 



ton, writes : "■ 'I'hc oiilv perfect results 

 that have been reached have come from 

 the api^lication of two pounds or more 

 of commercial fish oil, or whale oil soap 

 to a gallon of water, soon after the leaves 

 fall in the autumn " 



The following is a list of food plants 

 of the scale, viz : Apjile, pear, peach, 

 plum, cherry, apricot, quince, spiraea, 

 raspberry, rose, hawthorn, cotoneaster, 

 gooseberry, currant, elm, linden, osage, 

 orange, enonymus, acacia, alder, \Veep- 

 inir willow. ]t is evident, therefore, that 



if once this insect becomes distributed 

 throughout our country it will be impos- 

 sible to extirpate it. 



-Male and Kkmalk 

 Magnified. 



THE PLUM CURCULIO. 



C/^ rv^HE mature curculio lays the 

 eggs in the fruits when they 

 are very small, usually begin- 

 ning its work as soon as the 

 flowers fall. These eggs soon hatch and 

 the little maggot bores into the fruit. 

 Those fruits which are attacked whilst 

 very young ordinarily fall from the tree, 

 but those which are attacked when they 



are half or more groivn may adhere to 

 the tree but are wormy and gummy at 

 the picking time. The mature beetles 

 are sluggish in the mornings and are 

 easily jarred from the trees. Taking 

 advantage of this fact, the fruit grower 

 may jar them into sheets or a large can- 

 vas hopper which is wheeled from tree 

 to tree upon a wheel barrow-like frame 



257 



