Nature conservation is an activity of national governments and private societies. Invertebrates have been largely neglected. On the international European level the Bern Convention and the Habitats Directive include some invertebrate species. The number of invertebrate species needs to be increased. For the useful selection of species one needs to have access to databases on distribution and habitats. The available catalogues and national or regional checklists for spiders, in print or on the internet, are listed. A more centralized organization is proposed, in order to profit successfully from the current growing interest in the protection of invertebrates and their habitats.