Predicted regions of historical stability in the Phylocallyx clade across the Quaternary, based on summed predicted occupancy of the clade across current (0 ka pre-industrial), mid-Holocene (6 ka BP), Last Glacial Maximum (LGM; 21 ka BP) and Last Interglacial (LIG; 130 ka BP) climatic scenarios. Areas in red are those where all species of the Phylocallyx clade are predicted to occur during all four time periods and represent postulated refugial areas for the Phylocallyx clade. Maps are for (a) South America, (b) central South America. Brazilian states are labelled as follows: Amazonas (AM), Bahia (BA), Ceará (CE), Distrito Federal (DF), Espírito Santo (ES), Goiás (GO), Maranhão (MA), Minas Gerais (MG), Mato Grosso (MT), Mato Grosso do Sul (MS), Pará (PA), Paraná (PR), Piauí (PI), Rio de Janeiro (RJ), Rio Grande do Norte (RN), Rio Grande do Sul (RS), Rondônia (RO), Santa Catariana (SC), São Paulo (SP), Tocantins (TO).