I'm new to the forum, it's nice to think about having houseplants again, it's been a long time!
Someone gave me a mixed plant arrangement, and I enjoyed it for a few days, then separated them out into terra cotta containers. I noticed some pests on one of them -- I believe it's an arrowhead plant, from what the internet tells me.
Here are some images of these creatures, they're very tiny. There is no webbing of any kind, they are on the undersides of the leaves.
Thanks in advance for any help/advice!