I've seen many pests that leave fluffy blobs of white eggs (scale insects, mealy bug etc) but never seen this level of organisation (trooping the eggs?).
Is it a different species or is it just the weirdly dry Spring? Or what?
The strips started appearing a couple of weeks ago and are also replaced very quickly by more of the same, I'm squashing them every other day but they haven't stopped yet.
The plant is outside now so I hope predators are available to do the job for me...
Cheers.