.>..Since when does using small cell say, in
USA mean AHB in given areas?

At the Austin, Texas ABF meeting  (1996?) Paul Jackson (Texas bee inspector)
passed out his card with a gauge on the back.

If the cell size matched the 4.9mm cell size then the hive should be
considered AHB.

The South Africa beekeepers on this list will tell you. 4.9mm. is the size
most common with africanized bees. The foundation they buy is 4.9mm..

They will also tell you  in their hives plenty of varroa can be found. Both
in worker brood & drone brood.

Bob

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