Erratum: There are three species of Chrysaora (Scyphozoa: Discomedusae) in the Benguela upwelling ecosystem, not two - Ras, V; Neethling, S; Engelbrecht, A; Morandini, André Carrara; Bayha, K.M.; Skrypzeck, H; Gibbons, M.J (Zootaxa, 2020)