I’ve just noticed small white egg-like sacs on the bark of the branch that I use to grow my tongue orchid Dockrillia linguiformis.
In fact the sacs are not solid white but appear to be translucent.
The timber substrate I use is Australian swamp oak Casuarina glauca.
It may be circumstance, but I noticed a part of the older length of orchid had been pried away from the bark to which it was fixed. Maybe something laid these “eggs”, or maybe something was trying to eat these “eggs” and either way knocked the section of orchid.
Photos are included below...