I threw some infected tomato, and potatoe plants into a bath, and hope to drown all the pests including psyllids. But then these slimy things appeared in the liquid. Their body is the same size as their tails, and they have feet like caterpillars, but swim under the water. I was using the water as a compost tea but they block the nozzles of my water can.
I've never seen anything like them before. I'm in New Zealand. I'm guessing it's some type of larvae.
Pests with tails
Pests swimming in the bath