Simcoe County Bird and Nature Board. POSTS MUST INCLUDE FULL NAME AND EMAIL ADDRESS OR THEY WILL BE DELETED FROM THE BOARD. Banners at top of page cannot be blocked but are not part of the page. BOB BOWLES
Re(1): yellow caterpillers what are they??

Hi Bonnie;

They sound like sawfly larvae and not caterpillars of moths and butterflies from your description. Do you have a photo. My best guess would be Web-spinning Sawfly Larvae - Neurotoma fasciata until a see a photo. Record also the host tree species that they are on.


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