The wood of the Banksia that the Xylocopa used was
dead and cream colored
It is soft and fibrous due to the presence of white
wood-rotting fungus which degrades cellulose,
hemicellulose, and lignin.
Active nests were found in trunks that were not
cracked and did not have other invertebrate
organisms living within 20 cm of the entrance to the
Abandoned nests had cracks and tunnels that were
lined with fungal hyphae, or had evidence of
invaders (wasps, ants, spiders, or other bees).
Banksia nests could last for several years.