Bui. 1223, U. S. Dept. of Agriculture. 



Plate I. 



European Elm Scale. 



A, Egg. B, Dorsal view of first-stage larva. C, Ventral view of second- stage female 

 larva. (Second-stage male larva is identical except for antennae, which are 7-segmented.) 

 D, Dorsal view of newly molted or virgin female. E, Ventral view of mature female. 



