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  • Author: Petr Dolejš x
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Abstract

During an arachnological survey in the Šumava National Park in 2016, two very rare spider species were discovered: Araneus saevus (Araneidae) was recorded for the second time, 45 years after its first report in the Czech Republic. The species is therefore no longer regionally extinct, and can be considered critically endangered. Theridion boesenbergi (Theridiidae) was recorded for the first time in the Šumava Mts. Ecological characterisation of the species is improved, being more psychrophilous than was previously expected. Almost all collected specimens of both species from the Czech Republic are deposited in the National Museum in Prague.

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Abstract

The new zoological exposition of the National Museum will be installed in eight exhibition halls on the second floor of the Historical Building. The exposition has the preliminary title Evolution and thematically, it will follow several significant evolutionary events, which enabled animals to occupy Earth. The first two exhibition halls will be devoted to invertebrates and their ability to occupy all kinds of environments. The following two exhibition halls will introduce fish-like vertebrates, amphibians, and reptiles and they will focus on the most important evolutionary step of vertebrates – stepping out of the water and onto land. The next hall will be devoted to the origin of flight and birds’ conquering of the skies. The last two halls will be dedicated to mammals and their origins and conquering of land, water, and air. The visitor will become acquainted with contemporary organisms as the results of a long evolutionary process. The exhibitions will be based on authentic collection items to the maximum possible extent, though models and multimedia will also be used on several occasions. The exposition should also include the restoration of the popular Pokoutník Gallery.