Bay sucker gall, Trioza alacris

I found in Bexhill that the leaves of many bay trees, Laurus nobilis, were heavily infested with galls of the Psyllid plant hopper Trioza alacris.

I have often seen these galls on the bay trees that are, or used to be, so popular in suburban areas, but this is the first time I have seen the nymphs of the little creatures that cause them. They are covered with a grey, waxy material and a fluffy white extrusion.

This is an introduced species (as of course are bay trees) that has been spreading northwards in Britain.