Vom Wert alter Amateursammlungen – vier Spinnenarten neu für die Schweiz in der Sammlung Ketterer

During the 1960s to 1980s Charles-Emanuel Ketterer collected and identified spiders mostly from Wallis (Switzerland) without almost any contacts to other arachnologists. His collection is documented accurately by a datasheet per sample. Considering the possibilities at that time, the identifications were highly accurate. The 836 samples re-determined cover 249 species. Four of them represent first records for Switzerland: Altella lucida (Simon, 1874), Agyneta suecica Holm, 1950, Neon rayi (Simon, 1875), and Hyptiotes flavidus (Blackwall, 1862). A further nine species would have been first records if Ketterer had published his data at that time.