The images show a White Slug Mite attached to the winged Queen ant of sighting 4565990. The mite is in the centre of each image, attached just above the wing connection to the Queen ant's body.
Hi @michaelb I know next to nothing about ant mites, sorry. AntWiki has a summary information page about them at https://www.antwiki.org/wiki/Mites. Cheers, Jon
Hi @michaelb @JonLewis For your info, I've recorded a White Slug Mite on an ant before. See following Greater Brisbane Nature Map sighting: Macrodinychus sp. (genus) (A Mite)