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I?ve seen photographs of these families:
Nycteribiidae
Braulidae
Hippoboscidae
Carnidae

It seems they only feed on birds or mammals (not including us), but I?d like to know if there is any possibility of "mistake" with this

a really strange question, maybe only for hipersensibility cases allergy-like?

flies without wings and now I?ve foundt celyphidae, like a beetle!, Diptera are really amazing!