These insects are hard to detect for someone not used to see them frequently, neither to know their behavior.
If your San Pedro main crop or any eventual..Smyrna types appear to ripen and become edible... you can make the following easy test..for confirmation
Take a couple of these ripe fruit, wash their pulp and separate the seeds
Once clean put these seeds inside a transparent, clear glass with water...
If the great majority of seeds sunk.. this means they were fully pollinated by the insect.
This link will help to see what a popular SanPedro (DK) main crop looks once pollinated
http://www.planetfig.com/cultivars/fcveng8588.html
Seeds from a wasp pollinated fig sunk in water .. easy !
Francisco
Portugal