Glen, Judi and nenella, you guys are so sweet for watching out for my Phals.
In this case though, I don't think it's mealy bugs (I've never had any so I'm not sure, must check) but it's as Brenda says, it's happy sap and two of the white spots are reflections from the window. The spike is full of this happy sap and I should remove it, I know.
Carpe Diem: He is a lilac pointed little bugger named Pelle and he's
always involved when I photograph the Phals. Silly cat.