The leaves are eaten by four gall-producing insects of the Pachypsylla genus, which do not cause serious damage to the tree.
Celtis | Senna occidentalis | Platanus occidentalis | Celtis australis | Thuja occidentalis | Sarcoscypha occidentalis | Osmorhiza occidentalis | Linderiella occidentalis | Libythea celtis | Juniperus occidentalis | Euthamia occidentalis | Emblemariopsis occidentalis | ''Celtis timorensis'' at Hùng Temple | Anemone occidentalis |