Or what in the name of all that is agent orange are these things?
See here for some pics of a nasty looking critter. It is sat in a 55mm lens cap if you need some scale.
I was digging up some plants that were either on their last legs or had actually shuffled off from this green an pleasant world, and replanting some others ready for summer. All around the dead plants, burried to a depth of about 10 cm (4-5 inches) where these little critters,which I suspect had munched away on the roots and killed the plants.
They are about 3 cm long and appear to be hibernating (it is the tail end of winter here in Argentina). The star of our show started moving when I brought it inside in the warm, and certainly tried to chew down on the chop stick I was prodding it around with for its photo shoot. I thought it was a catapiller but it only has six legs only up at the front and a fine set of jaws.
Anyone any ideas?