Red spider mite (their not spiders, and if you look closer, their not red.
Like a hot, dry atmosphere, so if you can mist the plant regularly, you can control them, also there is a natural predator, (not sure of it's name, will try to find out) you can buy that will control it. With aphids, Pyrethium an organic insecticide will clear them if it is available over there. HTH.
John