elm sawfly Directory References Discover 7 Everyday English Idioms and Where They Come From Water Fluoridation: Just the Facts What Is the Emoluments Clause? Is Cinco de Mayo Mexico's Independence Day? Timeline of the 2000s Who Invented the Internet? 9 Memorials and Monuments in the United States Contents elm sawfly insect Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Cimbex americana Learn about this topic in these articles:description In sawfly…North American species is the elm sawfly (Cimbex americana), a dark blue insect about 2.5 cm (1 inch) long. The larvae feed on elm and willow. In Europe the larvae of Clavellaria amerinae feed on willow and poplar.Read More