GAINESVILLE, Fla. — A gift of more than 2 million butterfly and moth specimens to the University of Florida contains hundreds and possibly more than 1,000 new unnamed species, and will help researchers better understand biodiversity and environmental changes.

The gift to the Florida Museum of Natural History from Dr. William and Nadine McGuire of Wayzata, Minn., is valued at more than $41 million, and also includes funding for curation of the Lepidoptera collection, ongoing taxonomic and biodiversity related research, training of scientists and publication of books and relevant papers. The gift brings the number of specimens in UF’s collection to more than 9 million, one of the world’s largest.