Quote Originally Posted by lampost
Here's a thread over at ICMag that has some pics:

Fungus gnats or WINGED ROOT APHIDS??? - International Cannagraphic Magazine Forums

They are really easy to mistake for fungus gnats. I thought they were fungus gnats until I noticed they were kinda hanging out in my buds. And I took a microscope to them one day and noticed they were laying eggs or giving birth to little spider-like things...

The symptoms for me were basically a phantom nitrogen deficiency. The plant was slowly yellowing... although it was the entire plant... not just lower leaves. It was not helped at all by high-nitrogen nutes. By then it's pretty much too late.

Nematodes supposedly work well as prevention. But it appears there are a few different kinds of root aphids.

Have you tried foliar feeding the damaged plants with the nitrogen deficiency?
TurboALLWD Reviewed by TurboALLWD on . Root Aphids! Careful w clones... So any of you CO people ever run into root aphids? Be very careful where you get your clones! Mine came with spider mites and root aphids! Root aphids are far worse. I was able to easily get rid of the spider mites. The thing with root aphids is, unless you're looking for them, they've caused most of their damage by the time you notice them. Please just only get clones from people you trust. Rating: 5