Arbanitis papillosus is a species of mygalomorph spider in the Idiopidae family.

It was described in 1918 by Australian arachnologists William Joseph Rainbow and Robert Henry Pulleine.

[1][2] The species occurs in south-east Queensland in closed forest habitats.

The type locality is Tamborine Mountain, in the Scenic Rim Region.

[1][2] The spiders are fossorial, terrestrial predators.