I lifted the following post by James Fischer from the Bee-L mailing list. You can download the pdf of Traynor's article from the link below. Her article gives a much more detailed history of Varroa than I had understood.
"Varroa destructor: A Complex Parasite, Crippling Honeybees Worldwide" (No
journal as yet)
https://www.preprints.org/manuscript/202002.0374/v1
(Full-text pdf download from there)
Many will recognize the name of the lead author, Kirsten Traynor, who edited
ABJ for about a year, and more recently started her own much more rigorous
publication "2 Million Blossoms" https://2millionblossoms.com.
The paper does not presume to make any astounding announcements, but it does
have some very good graphics worth stealing for just about any talk one
might be giving on bees, as we cannot really explain "beekeeping" without
mentioning varroa. (Or, as my wife Joanne so elegantly puts it "How did I
learn to love one insect, and hate another?")