Question: what is eating the leaves of my willow tree?
Answer: We have a curly willow that is being eaten by small, shiny black bugs. ... Those shiny black bugs are likely imported willow leaf beetles (Plagiodera versicolora). Adults and larvae feed on the leaves of most willow (Salix) species, as well as Lombardy poplar (Populus nigra 'Italica') and cottonwood (Populus deltoides).