In the trap-door species of Lycosidae, like, for instance, Lycosa opifex of the Russian steppes, the hinge is weak and the lid of the burrow is kept normally shut by being very much thicker and heavier at its free margin opposite the hinge so that it readily falls by its own weight.
This spider belongs to the family Lycosidae, and has numerous allies, equalling or surpassing it in size, in various parts of the world, the genus Lycosa being almost cosmopolitan in distribution.
After beating his arachnophobia, Miles kept a pet Lycosa tarantula named Christina.In 2372, Miles was captured and falsely accused of espionage on the Argrathi home world.