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FOREST ENTOMOLOGY. 



Chermes pixi (Koch). 



This species is found on Scots pine and Austrian pine. The white 

 specks are generally found on the stems or branches of young trees, 

 and also on the shoots (fig. 304). To follow out the life-history of 

 this insect, the dark-brown queen aphis should be looked for in May ; 

 and by June she is covered with brownish-yellow pedunculated eggs, 



Fig. 303. Chermes larieis on foliage of larch. 



which soon hatch out into very active larvae. The insect protects 

 herself with long white silky filaments. 



In early spring the white cottony matter covers the young shoots, 

 as seen by fig. 305. It will also be observed that in this case, which 

 is purely a typical example of severe damage, the shoot is considerably 

 bent as compared with unattacked shoots, which are perfectly straight. 

 In many cases, however, healthy trees recover from attacks of this 

 kind and no serious injuries accrue, but, on the other hand, as will 



