SHORT: Is it a Worm? A Wasp? No, it's the Elm Sawfly!
This past August as I sat below an old oak tree while drinking my morning cup of coffee and looking out on a glassy Lake Darling in Alexandria, Minnesota, something fell from the sky and landed at my feet. Small and curled up like a slightly puff green and yellow sour gummy worm. It’s face made it look like a Pokémon, or like one of those smiley face antenna toppers. Two hours later, another fell in the same exact spot. If I didn’t already know what it was, I would think it was a caterpillar of some sort.
Read more and see bonus visuals here: https://thewildlife.blog/2019/08/14/is-it-a-worm-is-it-a-wasp-no-its-the-elm-sawfly/