 Also named in his honour is a botanical garden east of Manaus, and the phytochemical research laboratory at the museum in Belém.Ducke's entomological material is currently located at the Museu Paraense Emílio Goeldi in Belém, the Natural History Museum of Bern, the Museu de Zoologia of the University of São Paulo, and The Natural History Museum, in London.Ducke's general classification of the Neotropical social wasps is still used.