a Approximate distributional range of ball pythons in west and central Africa (shaded orange), showing relative export volume (number of individuals) of ball pythons exported from range states (depicted as proportionally-sized circles), 1978–2017. b Trends in annual exports for the three main exporting countries and all others combined. Species range from Auliya and Schmitz (2010) and Barker and Barker (2006). Trade data based on importer-reported quantities from the CITES Trade Database (http://trade.cites.org/).