Apiomorpha is confined to living on Eucalyptus. The galls of females occur on the stems and leaves of the trees, whereas the galls of the males can occur on the stems, leaves or fruits, or even as outgrowths off a female gall.
Reference
CSIRO, 1990. Insects of Australia, Volume 1: A Textbook for Students and Research Workers. 2nd Edition. Melbourne University Publishing.