see: https://forum.inaturalist.org/t/brazil-inaturalist-world-tour/4890.
it looks like the source that iNaturalist uses for county-equivalent administrative areas has a lot of errors in Brazil, and Itaú de Minas is probably one of the places that has errors. iNat staff would probably have to fix the problem, but it probably needs to be fixed upstream at GADM, too, if it hasn’t already been fixed there.
according to the note at the bottom of the thread referenced above, it looks like you can visit the place page in iNaturalist and flag the place as needing correction.