Really, jumping larvae...
I was watering a flower bed with zinnia's in it this morning. I was checking the progress when I was startled by thousands of little white worms/larvae 'jumping' all over the place. They are small, maybe 1/4 to 3/8 of an inch long and white with no other markings. They fold in half and then fling open, hurling themselves up to a foot or so. There were literally thousands of them in this small bed. I did a search and I think they may be some sort of gnat or 'springtail'. That's something new to me.
I took some pictures and a short video and posted them on my garden blog:
So my questions are:
What are they?
Will they harm any plants?
Am I going to have an outbreak of some nasty or annoying insect?
As of now I'm leaving them be since they don't seem to be causing any problems (other than creeping me out).
Thanks for your help