What's this one? Never seen it before... Michigan, USA.

Posted Apr 2, 2020, 10:26 PM UTC
26

Posted Apr 2, 2020, 10:26 PM UTC
A form of a stonefly it appears to be.
He's got a nice fashionable collar. What a beauty.
Indicator of excellent water quality; stonefly nymphs are intolerant of pollution
Salmon fly
Looks like a Giant Stonefly. Example pic here. They're harmless.
Nice, that's what it looks like! Thank you.