A lot depends on the definition of 'AHB'. If the term's restricted to scuts,
it's hard to see such a tropical race lasting in northern Europe. If the term
covers any African bee, then Tunisian queens were introduced to England in
about 1892 by a breeder named John Hewitt, and hyped as 'proof against foul
brood.' The same type was taken to the States by Frank Benton. Doubtless the genes
are still around.
Regards,
Robert Brenchley
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