They prefer to live in hidden places, and tend to make nice places (like the research rig) into ruins.
They attack from dropping from the ceiling and spit poisonous common lurker spit, for high quality harm.
They are big, thick fat spiders with purple and red markings on their thorax, and head; (as most spiders hide their abdomens).
They have no equipment but basic lurker spit, and webs.
They have no special abilities.