That explains why some of my flytraps have been mysteriously failing. Found this bugger when I cleaned out my camera, I was taking reference photos for a sketch. Just dug up the plant again to see if I could catch him, the whole section of the root and the culprit are gone. Little cutie got his snack, I guess.
@RationalLeft Not sure. The plant is Venus flytrap, so it was in live moss as substrate, very wet. I think it's a grub? Looks like a little clear caterpillar type body behind those little eyes.
@tippitiwichet Makes sense.