Arbanitis papillosus is a species of mygalomorph spider in the Idiopidae family. It is endemic to Australia. It was described in 1918 by Australian arachnologists William Joseph Rainbow and Robert Henry Pulleine.
The species occurs in south-east Queensland in closed forest habitats. The type locality is Tamborine Mountain, in the Scenic Rim Region.
The spiders are fossorial, terrestrial predators.