Their color is jet-black with a luster. The antennae have 11 segments. The base of the antennae are whitish with a blue-black color. The base of the elytra does not have a granular structure. Heavy sap flow occurs from these large tree, trunk, and branch wounds.
Infested trees are also prone to secondary attack by other diseases or insects.
Heavy sawdust debris is found at the base of afflicted trees. Oviposition cavities chewed out by females are found in the tree trunk bark, and at the junction of branches and the trunk. AG are large, conspicuous insects readily recognized by their horns or antennae. In China, AG has one or two generations per year. AG can overwinter as an egg, as a larva developed within an egg, as a larva, or as a pupa.