Cacopsylla sp - Last stadium nymph

Last week I found a small family of nymphs of some Cacopsylla sp on Salix cinerea. Turned out to be various stages of development, but no matures for ID ... oh well ... neat to see the shapes and colours of the little ones anyway ...
This here image shows a last stadium nymph on a tooth pick.

Here is an older nymph (early in last stadium or maybe stadium before last?), with a view of the ventral side:

Here is the same stadium more teneral still:

Here are some younger nymphs:

Compare here with the nymphs of the family Triozidae, that are notably different looking: