The antennae are usually 1.3 times the length of the body for females and 2.5 times the length of the body for males. In China, ALB may have one or two generations per year. A. glabripennis can overwinter as an egg, larva within an egg, larva, or pupa. Asian longhorned beetles fly for 2 to 3 days after emergence while mating and feeding. Adult ALB are present from May to October, although if temperatures are warm this period is extended and ALB can be found earlier in the spring or later into the fall.
Females chew a groove through the bark to the cambium on the branch where new shoots arise.
After 10-15 days, the eggs hatch and the larvae tunnel into the wood. First through early third instars feed within the phloem and the late 3rd to early 4th instar feeds within the xylem. Research on this subject is planned. One such study plans to coat infested logs with florescent powder. The beetles that emerge will be marked with the powder and researchers will then check the area for marked beetles.