Sason colemani is a species of barychelid

Barychelidae

The Brushed trapdoor spiders are a spider family with about 300 species in 44 general. This family is the only family in superfamily Barycheloidea....

 trapdoor spider

Spider

Spiders are air-breathing arthropods that have eight legs, and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other groups of organisms...

s that has only been found in a natural swamp in the Botanical Gardens in Cairns, Queensland

Cairns, Queensland

Cairns is a regional city in Far North Queensland, Australia, founded 1876. The city was named after William Wellington Cairns, then-current Governor of Queensland. It was formed to serve miners heading for the Hodgkinson River goldfield, but experienced a decline when an easier route was...

. Its retreat is a short tube with a door at each end which it builds on the bark of trees. When one door opens, the other is pressed closed. Paracenobiopelma gerecormophilum and spiders of the genus Cyphonisia build similar but slightly longer retreats.