In the lush valleys of Sughd live a race of giant, intelligent arachnids: the ophiliones. Omnivorous, they are as likely to eat fungus or guano as flesh, but they will not reject an opportunity to devour succulent human meat.
In combat, ophiliones attack with their two forelegs, with which they attempt to drag prey towards the powerful maw. They are by nature cowards, however, and they have two detachable legs (which they can regrow) to distract their enemies as they flee.
Armour Class: 5
Move: 180' (60')
No. Appearing: 2d6
Save As: F1
If both leg attacks hit, the ophilione drags the target to its mouth and bites for d8+1 damage; this hits automatically.
If an ophilione loses 75% of hits hit points or more, it will flee and shed two of its legs. These legs fight on as 1 HD monsters, with AC 7 and doing d4 damage.
A successful hit on an ophilione has a 10% chance of dislodging one of its detachable legs, in which case the leg will fight separately from the host as above.