Not sure what would cause those?
You can use a q-tip and dab them with alcohol. Maybe use a razor blade to slice one or two open to see if there is some kind of parasite in the raised areas.
@JungleShadows, pardalinium, springcolor, goldfinch4, gg5, Patty
Lets see if we can get some help with this. I have not had that on any of mine.
