I have had a few trips (IT consultancy) to Gabon the last couple of years, and have kept my eyes open for things to try in my med. garden. As yet, I have not seen anything convincing, but there is of course lots to see. Unfortunately, the areas are (so they tell me) blanket sprayed against mozzies, and the insecticide kills many other insects - so I have seen few butterflies (Libreville and Port Gentil). But colleagues who work in the jungle report some amazing creatures, moths especially.
So, good luck Joe!