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Interesting photos Rui and Jorge.

I wonder how a fly without wings get's distributed? Did they spread a long time ago when the fly maybe had wing and this is what is left, an endemic population? Or is it maybe the egg/larva stages of their life that allows for distribution possibilities!? Or do they just wander about. I guess that last part depends on how specific their living environment is and what requires for them to survive.

Did you see any more hunting activities or were they just humping around?