Based on the Skeletons found here this is what I cobbled together for a Wolf Spider.
Nature (Spider): 3
Nature Descriptors: Lurking, Hiding, Scuttling
Dispositions: Drive Off 4, Kill 6, Flee 5. All else Nature + Nature roll.
Fight Weapons: Poisoned Fangs
Instinct: Drop on the first prey seen.
Special: The Wolf Spider’s poisons it’s foes. On a major concession they are poisoned (sick), on a minor concessions they are terrified that the poison might be in their veins (afraid).