What are the symptoms of damage to jujube trees caused by the jujube looper?

The jujube looper, also known as the jujube inchworm, mainly damages the young buds, leaves and flower buds of jujube trees with its larvae, and can spin silk to bind and entangle them, hindering the extension of buds and leaves. In severe cases, it can strip the trees of all their leaves, causing serious yield reduction or even total crop failure.