Hi all. I recently discovered an infestation of sorts in a few of my plants and I’m seeking identification of the pest and some direction on how to approach this.

I first noticed some yellowing, damaged patches, and leaf loss on two of my pothos but chalked it up to an overly retentive soil (haven’t reported these two into 5-1-1 yet), edema, and natural leaf loss. However, my Marble Queen started rapidly declining, prompting me to closer examine the leaves and see that indeed there is some infestation. I found that same infestation on the Golden pothos as well as my spider plant and possible my beetle peperomia (all located near each other). These plants are massive so the idea of treating each leaf is a little daunting. I do have daughter plants from the golden and marble queen in other parts of my house that seem in great health, however I would prefer not to lose these plants.

The small black dots on the undersides of these leave are little bugs that crawl around. What kind of bug is this? What should I treat it with? Should I also preventatively treat the other (20+) plants in my apartment?

Thanks in advance!