Impossible to tell, your photo is too blurry and too far away. And, even if there were very clear photos, still probably impossible to determine what lemon you have by leaf/petiole shape, as they are all pretty similar. You'll have to wait for fruit. Do not remove any blossoms, it just promotes more blossoms. The tree will drop most if not all fruit when it is young, anyway, so it will take care of any excess fruit set, this is very normal for citrus. And yes, treat for wooly aphids. I found a few on my Dracena this year in my yard for the first time, ever. I am sure this is due to our extreme drought conditions and stressed plants.

Patty S.

Here is a link that might be useful: UC IPM: Aphids

Thank you very much for all your suggestions Patty. Do you have any preferred method to treat for the aphids?
Ale