I have something very similar - but mine are very small. you need a magnifying glass, but they are colored, have legs the length of the body and they have feelers on the head and tail. They definitly have picher like mouths. I have been killing em off for a while now - the thing is, these guys are not way near as big as everyone is describing. Mine are not even an inch long, but under a microscope thay are nasty and look just like these large worms.