Insects and Fungi Attacking Trees, Etc. 341 



In its earliest stage of growth it is yellow and crawls about 

 until it finds a good place to feed, when it becomes fixed and 

 does not move away during the remainder of its life. A single 

 pair may produce millions of young. It attacks all of our 

 fruit trees, currant bushes, gooseberry bushes, and many 

 ornamental trees and shrubs. There are many species of 

 scale insects so closely resembling this pest that when insects 

 of this kind are found they should be sent to the experi- 

 ment station entomologists for identification and suggestions 

 as to remedies. 



Remedy. This pest has been destroyed in some cases by 

 the same, but more concentrated, remedies as used for the 

 oyster-shell scale. The applications should be made more 

 thoroughly with more frequent use of the kerosene emul- 

 sion during the summer. If promptly attacked when first 

 discovered it may be kept under control at small expense. 

 The most effectual remedy is the lime-sulphur solution, 

 applied in December or March, or just before the buds have 

 started in the spring. The formulas and full directions 

 for these applications may be found in the reports of the 

 experiment stations, or upon application to the entomol- 

 ogists of these institutions. 



Maple Woolly Scale (Pseudococcus aceris), Fig. 188. 

 This comparatively new insect pest has appeared in 

 several sections of the country, but thus far has been found 

 only on the soft maples. In Europe it is reported to be 

 injurious to the linden, elm, chestnut, etc. (see " Bulletin 

 N. H. Ex. Station, No. 36 "), and should it increase in 

 this country will prove a very troublesome pest. It is some- 

 what of the nature of the scale and aphis, sucking the 

 juices of the plant upon which it feeds; its body and the 

 masses of eggs which it lays being covered with a white 

 cottony or woolly substance, from which it takes its name. 



Remedy. While no experiments have been made, or at 



