184 Insects injurious to the Poplar, Birch, etc. 



Seiapteron, a moth much like that which injures the cun-ant-bush 

 by boring, has proved very destructive to the poplars in Nevada and 

 in California. One species attacks also the locust, in the latter state. 

 The accompanying engraving shows one of the insects that attacks 

 the poplars in Europe, and the effect of its ravages. 



113. Ravages of the Snperda 

 carcharias upon the Poplar. 

 (Insect and Larva of Na- 

 tural Sizo.) 



114. The Poplar Twig Borer 

 (Saperda ). 



727. Insects that injure the Linden. The basswood has 23 known 

 enemies, including borers, inch-worms that consume the leaves, leaf- 

 beetles, and leaf-miners. Some of these are the same that feed upon 

 the poplars. 



728. Insects thatinjure the Birch. Of these there are 19, including 

 plant-lice, leaf-hoppers, etc., chiefly attacking the leaves. This tree 

 is comparatively free from these injuries. 



729. Insects that injure tfie Beech. Of these 15 are named, chiefly 

 eating the leaves. 



