Rinzler, do you know what kind of plant this is? The picture isn't helpful at all. The spots that I see look more like something caused by a disease than an insect pest.

because of the location near the edge.. but not the edge.. makes me also wonder about mechanical injury ...

ken

the id says that it is a microsorum perary, but I suspect it is a staghorn fern

Those very small lesions/holes on a staghorn fern are of no importance unless they are enlarging and/or spreading to new areas.

To be more blunt: Leaves get spots, many of which don't adversely affect the plant.