Ixamatus caldera

Ixamatus caldera, also known as the tessellated wishbone spider or volcanic ground spider, is a species of mygalomorph spider in the Microstigmatidae family. It is endemic to Australia. It was described in 1982 by Australian arachnologist Robert Raven.

Distribution and habitat
The species occurs in north-eastern New South Wales in closed forest habitats. The type locality is Bar Mountain, near Kyogle in the Tweed Range.

Behaviour
The spiders are terrestrial predators.