38 NEW YORK STATE MUSEUM 



FIG. 



8 Leaf nearly skeletonized by grubs or larvae and on it two 



cast larval skins, natural size 



9 Leaf showing holes eaten by beetles, natural size 



PLATE 2 



Upper austral life zone in New York state, which is the area 

 likely to become infested b}^ the elm leaf beetle 



PLATE 3 



Work of elm leaf beetle on Elm street, Albany, taken 15 June 



1898. 



PLATE 4 



Work of elm leaf beetle on Jacob street, Troy, taken 15 June 

 1898. 



PLATE 5 



Power spraying outfit at work in Albany, taken 15 June 1898 



PLATE 6 



Hand spraying outfit at work in Albanj^, taken 15 June 1898 



PLATE 7 



1 Work of elm leaf beetle larvae, showing characteristic 



skeletonizing 



2 Work of elm leaf beetles, showing characteristic holes 



(original) 



PLATE 8 



Gossyparia ulmi Geoff. 



1 Females, slightly enlarged 



2 Cocoons of males, three times natural size 



