INJURIOUS INSECTS AND I-'UXGI. 283 



tender parts. 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 experiment 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 and more frequent use of the kerosene emulsion 

 during the summer. If promptly attacked when first dis- 

 covered it may be kept under control at a small expense. 

 The most effectual remedy is the lime and sulphur or lime 

 salt and sulphur solution applied 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. 166. 

 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 

 somewhat 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 

 least reported, to prove the value of the various common 

 insecticides in destroying this pest, from the nature of the 



