good job ID'ing those early man.
Absolutely without a doubt russets.
Cool thing is, they are easier to eliminate than spider mites.... but I swear the spidermites around here are like on anabolic steroids... or maybe they are secretly lab-tested and bio-genetically engineered... like NIMH rats...
that's it, they fuckin live under my rosebush...
lavender oil works well on russets (not being a hippy, it works better than chemicals)
I dipped mine in a bucket with a product called "no spider mites" ironically it doesn't do shit for my spider mites, BUT it does kill russets, added dr bronners lavender soap (ten drops), added pure lavender oil extract (ten drops).
DIP your entire plant, and "swirl" the tops, do that 3 times every two days, and you are golden, it's a bitch, but it works, completely eliminated all my russets (spider mites came back in a week, but the russets were eradicated)
russets reproduce sloooowly compared to spider mites. waaay easier to kill. BUT they FUCK up your plants hardcore... way more than spider mites, spider mites like to hang out and leech onto your plant for the duration of the grow, russets will full on KILL your plants, one of the rare bugs that can kill plants.
Your plant still grows with spider mites (albeit shittily) but russets will STOP everything.