GregV, do you think it would be a good idea to measure the tongue lengths of your bees that come up as high percentage Caucasica on the wing-morphometrixs? Caucasian bees are unusual in having long tongues. I have wondered about whether the bees coming up "Caucasica" in the wing morphometric tool are actually something else, like an Amm hybrid... I know that Amm genetics (or "M" lineage genetics) have been found here in the Southeast US, and I have heard about Thomas Seeley's feral bees in Ithaca, NY having a good percentage of Amm. So, it is hard to think Amm. would be so uncommon as is your experience with testing the wings of your local bees in Wisconsin.I don't know anyone in Spain/Italy to ask for those particular wings (not to mention the wings should be trustworthy as true AMM wings).
In Russia I hardly know anyone either, but at least they post their wing data online (which include the index numbers that I could use).
The 8 point wing analysis is not precise enough to be sorting out AMMs from AMMs - that is not a right tool for the job.
It is only good enough to separate AMMs from the others as far as I know, like so:
View attachment 62013
Also, do you think hybridization could cause problems with the "negative" discoidal shift wing vein shape? Perhaps if the "negative" discoidal shift is a recessive trait, then it would be easily masked and not show up, even when close to pure Amm?