I'd been to the Blue Mountains several times looking for this species and H. paradelpha, without any success. Finally I found both of them in an area of woodland close to Blackheath. The only specimens I identified as H. paradelpha were males, flying along wide paths and clearings where paths intersected. They were difficult to approach, and when disturbed would fly up into the treetops before descending to the ground again.

Blackheath, Blue Mountains - March 2006.
Hampton - February 2008
Jenolan - February 2008
Wentworth Falls - February 2009
Brindabella Ranges, ACT - February 2010