28 



from the cocoon, b. shows a twig with shts girdhng it, cut by the 

 saw of the pei^fect insect. The larvae feed upon the leaves notonh' 

 of the elm, but also other trees, as willows, birch and basswood. 

 The eggs are laid on the leaves in June, as seen in figure 19 a. 

 These eggs soon hatch into larvai which closely resemble those 

 of manv moths, such as the cut worms. They feed for about two 



a. Willow leaves sliowing 



deposits of eggs. • 



b. twig girdled. 



c. Egg enlarged. 



d. Young larvae. 



Figure 19. 



C'niibex Anicflcaiia, Jj^ACll 



e. Full grown larva-. 



f. Cocoon. 



.^^ Chrysalis in cocoon. 

 h. Chrysalis. 



/. Adult fly, male. 

 j. Saw enlarged. 

 k. End of saw. 



( After Riley.) 



