This golden-tailed ant mimic appears to be mimicking Polyrhachis rufifemur, the Red-thighed Polyrhachis, common in South East Queensland. The mimicry is shown in the photo by Brodie Foster of a specimen from near Mooloolah of the spider (top) and the ant (below). This spider is widespread in Queensland. In Cairns it is associated with Polyrhachis foreli and P. cupreata.
Comparison: spider and ant
Photo: Brodie Foster
