There are very small black bumps on my palm tree that have a sand colored fuzz or strands coming from the top. I needed to use a loop to see them, as they are very small. I do not have a camera that will take a picture that small, but if you have any ideas, please let me know.
Palm Tree Pest
Certified GKH Gardening Expert
This could be Aphids, Scale or another sucking insect.
Neem Oil is a good treatment for the insects that are on your plant.
Here are some links with more information.