OMG, Are these spider mites?
Just found this on a Philodendron Bipinnatifidum plant. It has been summered outside. I put the whole leaf in a bag and taped it tight.
I also see a lot ants on my another tree - a Schefflera Arboricola, it is not at the same place where the Philo is. Read about Ants harvest the honeydew of Spider Mites?
Any tips to get rid of them if they are what I think they are?