I have a fig tree in a pot in my balcony.
Recently it has lost a couple of leaves and they all display the same features: yellowish color on the front side of the leaf, and tiny small white dots on the reverse.
Some of the leafs in the tree are starting to experience the same symptoms, and I fear it is spreading more and more and that I could eventually kill all the foliage and the fruits.
I had during this summer a severe case of spider mite in another plan in the same balcony. However I haven't seen any spider or web so far. Making some research I'm starting to think I could be some sort of mildew (powdery mildew?) but I couldn't tell on my own.
Here are some pictures you may find useful to diagnose. Note: you may notices some leafs with holes in them, those were caused by a hail storm this late springñ