 Species pluralism comes in various forms (for example, Kitcher 1984, Mishler and Brandon 1987, Dupré 1993, and Ereshefsky 2001). Kitcher and Dupré offer forms of species pluralism that recognize the species concepts mentioned above—biological species, phylogenetic species, and ecological species—as well as other species concepts. As we saw in Section 1.2, Kitcher accepts species concepts that require species to be individuals, and he accepts species concepts based on the structural similarities of organisms. The latter type of species are not spatiotemporally continuous entities. Such species merely need to contain organisms that share theoretically significant properties. Dupré’s version of species pluralism is more robust. He recognizes all of the species concepts found in Kitcher’s version of pluralism. Dupré’s pluralism also allows species concepts based on similarities highlighted by non biologists. For example, Dupré accepts species concepts based on gastronomically significant properties.