184 



AGRICULTURAL EXPERIMENT STATION. 



by the holes in the leaves as shown in Fig. 31. The application of 

 the hot water would probably destroy a great many plant lice which- 

 are said to be doing considerable damage to the gooseberry' bushes- 

 in the nursery rows in Aroostook county. Several natural enemies- 

 keep the currant worms in check, A small ichneumon fl}' is knowii> 

 to be parasitic on the eggs, and other species destroy the larva. 



FIG. 33. 



The Placid Soldier-bug shown in Fig. 33, a,, 

 enlarged, and natural size below, is known to de- 

 stroy them. This insect or one related to it is- 

 reported by Mr. E. W. Meriitt of Houlton, Me.y. 

 as feeding upon the larvse, piercing them with its- 

 short beak and then sucking them dry. This insect, 

 should not be destroyed. It may be known by the- 

 following description : Head, thorax and legs- 

 black ; abdomen, red, with an elongated black 

 spot in the middle, crossed by a white line. 



THE WHITE SCALE, 



Aspidiotus nerii, Bonche. 



Specimens of this insect were received upon the leaves of the- 

 English Ivy. The plants were so badly infested that the leaves- 

 were nearly white with the scales. The lady sending the specimens- 

 stated that she had some time before placed leaves with the white 

 spots on them, which came from a neighbor's, on a shelf near her 

 plant, which would account for the attack. This insect attacks the- 

 orange and lemon trees in Southern California and Florida besides- 

 a number of other trees and plants. The Fig. 34 we give shows an- 

 acacia twig infested by this insect, the scales showing natural size- 



