tobacco hornworm
This is a nightshade eating machine, they're tiny at the mo, but will be really big when all fattened up.
We often get them in our garden on the tomato plants and can hear them munching away, but are usually unable to find them until they reach hotdog size. We frequently give them to neighbors with chickens.
Kill it with fire!
My tomato plants will thank you.
We would just go down the rows of plants, pick them off with our hands and throw them on the ground with enough force to kill them.