Cethegus lugubrisCethegus lugubris is a species of mygalomorph spider in the Euagridae family. It is endemic to Australia. It was described in 1881 by Swedish arachnologist Tamerlan Thorell.Distribution and habitatThe species occurs in Far North Queensland in closed and open forest habitats. The type locality is Somerset at the northernmost tip of the Cape York Peninsula.BehaviourThe spiders are fossorial, terrestrial predators. They construct tubular silk webs.