A dark side of conservation biology: protected areas fail in representing subterranean biodiversity. Databases.

We obtained distribution data for leiodids by digitizing the information provided by Fresneda and Salgado (2017). This information was updated and expanded with additional data from several sampling campaigns (unpublished data). For subterranean spiders, we included the entirety of the Alps range extending from France in the east westward through Switzerland, Italy, Liechtenstein, Austria, Germany, and Slovenia, by integrating available data in Global Biodiversity Information Facility (GBIF), Spider of Europe), Araneae.it  and other literature sources.