ConceptChanges
From Species File Help
tblConceptChanges, kinds of changes in taxon concepts, used for tblCites and tblTaxonHistory
ConceptChangeID, integer, 4 bytes 0 = unspecified 1 = unchanged 2 = new 3 = restored 4 = expanded 5 = shrunk 6 = otherwise modified 7 = terminated 8 = transferred Name, text, 20 characters maximum Explanation, text, 100 characters maximum