These wasps are parasites of cockroaches.
Late February 2016
Knocklofty Reserve, Hobart
The wasp was moving very rapidly along a fallen tree. It rarely paused for long enough to focus. It appeared to be collecting sawdust from one section to put in a hole. Its movement and general appearance was very Myrmecia-ant like.
The same wasp a few days later, filling a different hole with sawdust and debris.
Early February 2017
Sandfly
