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I'm having trouble in the identification of black bees (or bumblebees?) which I thought were all ''Xylocopa violacea''. However, someone assured me they were not. Here they are, together with my best guess:

#1 - Xylocopa violacea ?
#2 - Anthophora plumipes ?
#3 - Bombus sp.?

Thank you,

Joaquim Gaspar