Caused by aphid. Infested leaves are reddish and twisted, later turning brown. Caused by mite. Infest male flower clusters causing irregular growths. Caused by fly midge.
Leaflets form hollow pods which eventually turn brown.
Caused by flies and tiny wasps. Various warty growths found on leaves, petioles, and twigs. Caused by tiny wasp. The light tan, round galls are found on twigs in clusters of three or more. Caused by tiny wasp.