Larch insects 



Woolly larch aphid, Cherines strobilobius Kalt. 



1 Young on leaf, showing the cottony filaments and near by the egg of a 



predaceoLis syrphus fly, very much enlarged 



2 Young aphid, very much enlarged 



J Woolly females on leaves, natural size 



4 Egg mass at base of a whorl of leaves, very much enlarged 



Larch case bearer, Coleophora larlcella Hiibn. 



5 Mined tips of larch needles, showing hole through which the caterpillar 



feeds, much enlarged 



6 Caterpillar partly out of its peculiar case, much enlarged 



7 Larva verj' much enlarged 



8 Cocoon much enlarged 



9 Moth much enlarged 



10 Case bearers on the leaves, natural size 



Larch sawfly, Lygaeonematus erichsonii Hartg. 



1 1 Larvae on foliage, showing characteristic positions 



