Guardian Nature School Contact Blog Project Noah Facebook Project Noah Twitter

A global citizen science platform
to discover, share and identify wildlife

Join Project Noah!
nature school apple icon

Nature School For Teachers - Fall 2020 Launch! visit nature school

Elm Sawfly (larva)

Cimbex americana


Pretty hard not to believe it is actually a caterpillar?! This is tha larva of the Elm Sawfly, the largest north american sawfly. The larva is yellowish-white with a black strip on the back. It curls at rest. Overwinter in cocoons.


City park.


Not considered a forestry problem, but can defoliate shade/ornamental elms and willows

Species ID Suggestions

Sign in to suggest organism ID

No Comments

Saskatoon, Saskatchewan, Canada

Spotted on Jul 15, 2013
Submitted on Jul 28, 2013

Related Spottings

cimbex sawfly Sawfly Birch sawfly Birch Sawfly

Nearby Spottings

Stink Bug Mourning Cloak Chrysalis Creeping Bellflower White-crowned Sparrow
Noah Guardians
Noah Sponsors