Polyrhachis ammon, an extensively distributed and fairly common ground-nesting species, predominantly inhabits open eucalypt forests along the eastern coast of Australia. Its habitat spans from the northern regions of Queensland to the southern reaches of Victoria and extends inland to the Australian Capital Territory. Nonetheless, its prevalence diminishes as it approaches the northern boundary of its geographical range. This ant has striking golden and orange colours with two large black spines at the back of the thorax. It often tends to aphids.
Identification
Belonging to the ammon species-group within the Polyrhachis subgenus Hagiomyrma, Polyrhachis ammon exhibits striking similarities to Polyrhachis uncaria.
Across its habitat, P. ammon establishes numerous populations, each exhibiting morphological variations that, to some degree, overlap. Despite these local differentiations, a holistic comparison of specimens throughout the entire distribution revealed no taxonomically significant variability. It is my contention that all scrutinized populations are, indeed, conspecific.
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