Agathis is sometimes called "Tulipwood". It's been used in guitar building for a long time. I believe (but could be wrong) that Burns of London at one time made their high end guitars from this wood. These days it seems Ibanez make a selection of their cheaper guitars from it. However I also believe that ash and alder were used on the original Fenders as that's what Leo could get his paws on for cheap prices and they turned out as great woods.