Tarantula |
If the mount charges, the mount and rider both get +2atk and -2 ac from charging. The mount gets to make one attack at the end.
The rider still has both his standard and move actions for use, and so he can use his standard action to make an attack once the target is in range. Due to text in the mounted combat section, he cannot make a full-attack (melee) if the mount has moved more than 5'.