Twilight Imperium (Third Edition): Shattered Empire
Re: Production Strategy Card & Newly Constructed Spacedock
It's unclear whether Arborec GF can use production to build, since it specifically notes systems with a Space Dock.
This point was actually addressed in the most recent FAQ: "Q: Can Arborec Ground Forces be used with the Production Strategy Card?
A: Yes. However, the Ground Forces must be in a system containing one or more friendly Space Docks."