YlG. 2-].— The European elm sawfly. The saw-like ovipositor projects from the 



abdomen of the lower sawfly. The flies are shown much enlarged, as they measure 



only 3 millimeters in length. 



m :t 



■ ,1-,- 



Fig. 28. — The European alder sawfly and its eggs 



stuck in leaf (above), both much enlarged; 



the fly measures only j millimeters 



in length. 



