Obs, whats up big dog. I pray that you are starting this thread for informational purposes and not because you think you may have Root Aphids as they are NO fun. i'll see what i can find in my old pics as I had a hellacious battle with RA, but i didnt take many pics during that period as i absolutely hated the way my plants looked. However several of the descriptions above are correct. Early leaf yellowing, rust spots, necrosis, are all part of it. Basically if you start seeing a bunch deficiencies when you know you shouldnt have them its a good time to start lookibg at your root zones and yellow sticky traps for the RA bastards. If you pull a suspect plant you should be able to see them on your roots. Roots will also look brown or even clear as theyve been drained and fed on by the RA. Also you will begin to see the white substance that they leave behind while they are feeding. Definitely use sticky traps around your plants to catch the RA flyers and help in identifying them. Capulators bennies in a tea, predatory nematodes, Insect Frass, are all good organic ways to control them. Imidicloprid products like Bayer tree and Shrub (systemic, chemical insecticide) as well as Spectracide/ Triazicide will kill them, but are a bit on the gnarly side. MANY of us here either have or have had RA, so hopefully together we can get a good set of pics and info together here for you and others. Best of luck to ya brotha. Peace out Obs and all! Motiv