An interesting chart i found. I wonder if its accurate (in "Insects and Spiders of the World. volume 4):  

Jsacadura,   

The photo above is a wasp -blastofagi live in Tuapse, where every year there are temperature -10-12 degrees Celsius.

Thank you, Vladis.

That is very enlightening and clears any of my doubts regarding the possibility of having wasps over here.

An interesting article about Insect Cold Hardiness i found with strategies they use to survive freezing temperatures:
http://http-server.carleton.ca/~kbstorey/insects.htm

Sorry for the off-topic, guys. Specially you, Francisco - i got a litlle caried away by the caprification theme.

In our temperate climates the problems originated by temperature and affecting Caprifig survival do not come from the occasional frosts or snow/ice ..down to -4 to -6ºC or evem lower
Think that the amount of flesh insulation built around the fruit cavity (Profichi) and the thermal gain radiated  from hundreds of living creatures inside,  keep the inside temps quite manageable.

The problem is IMO. is right on the opposite side of the thermometer scale !
Have observed on some years, that 'heat waves' brought by strong SE winds (right from the Sahara across the Strait) do cause excessive temperatures reaching well over 30 to 35ºC around the fruit by the end of March and April. This will definitely kill practically all insects.
The figs will turn yellowish immediately after the larvae are killed, shrink/dry and fall to the ground
Very few figs, on the more protected limbs, under the shades will survive .Those are poor years for pollination and the southern farmers along the centuries have devised a strategy to try and  diminish the damage.

Francisco
Portugal

Thanks for that last information, Francisco.

I should be alright then with the introduction of the wasps, come next year - the problem here could be the cold, but never too much heat - we go above 35 ºC (95 ºF) on some very hot summer days only.

My Spanish friend in "Sierra de la Contraviesa", a region known for the extensive use of Caprifigs in the production of a white type of fig, used mainly for drying ( Blanca de Pasa), has confirmed that his wasps have to endure freezing minimum temperatures that, in some years, can reach -10 ºC (14 ºF) and lower, and that he is only at 1.000 m.
Acording to him, there are other farmers with caprifigs and Smyrna type figs on the top of the mountain and some on the Sierra Nevada, with temperatures even colder.

A Spanish PDF on the figs of that region - on page 8 we can see a photo of the caprifigs placed on a fig tree of "Blanca de Pasa" - i have a cutting of this variety of Smyrna type fig in development.
They mainly use one variety of caprifig that local farmers call "De perilla":
http://www.agroecologia.net/recursos/publicaciones/publicaciones-online/2006/CD%20Congreso%20Zaragoza/Ponencias/15%20L%C3%B3pez%20Agudo%20Com-%20Localizaci%C3%B3n.pdf

Jaime, this is quite interesting

In that area the climate is mild although being slightly above 3000'
I was not aware they forced pollination on that variety most probably for sake of gaining good crunchy flavors on these small dried figs.

Found that a sample town in the area (Los Morales) shows this average yearly climate, which I believe quite close to your place excepting altitude.

http://www.chinci.com/travel/pax/q/2515946/La+Fuente+de+Los+Morales/ES/Spain/0/#1|5|travel|pax|5|2515946|La%20Fuente%20De%20Los%20Morales|ES|Spain|Africa/Ceuta|51|PPL|36.9666667|-2.6833333|Andalusia

Their Caprifig could be a good candidate for your zone as I believe it ripens somehow at a later date.

Francisco
Portugal

Hi Francisco,

>>I was not aware they forced pollination on that variety most probably for sake of gaining good crunchy flavors on these small dried figs.

You are probably right. Nevertheless, he says this particular type of fig is a Smyrna - but also that no one studied it and because that are so many caprifigs around the area, nobody really knows.
If they don't bring the caprifigs near the figtrees the production is lower - they do it 2-3 times during fig maturation, according to the number of figs that took and their rate of development.
In the publication i mentioned they say that the caprification is essential to the non partenocarpic varieties in the area - but, in the supplied list, they don't specify which ones are Smyrna.


>>Their Caprifig could be a good candidate for your zone as I believe it ripens somehow at a later date.

I already have a cutting rooted. Here he is, alongside a Blanca de Pasa - a bit of what appears to be FMV on the first leafs, but seems better know (the small cutting was in a very bad shape, i am surprised it rooted):

 

I also have two other varieties that are mentioned in the text - "Brevera Blanca de la Contraviesa" y "Cuello de Paloma negra o Calabacilla negra"