Rovnokřídlí (Orthoptera) opuštěných vojenských prostorů v České republice.

Areas used for military training have a typical character of open sites with a varied mosaic of habitats and a significant representation of early successional stages. The diversity of habitats creates favorable conditions for species-rich plant and animal communities. This paper presents the results of a repeated inventory survey of Orthoptera species at 42 abandoned military sites in the Czech Republic conducted in 2008–2009 and 2021– 2022, respectively. In total, 61 species were recorded, representing 68 % of all Orthoptera species with recent occurrence in the Czech Republic. Seventeen of the identified species are listed in the recent Red List of Threatened Species of the Czech Republic. The most important records include Dociostaurus brevicollis, Montana montana, Ephippiger ephippiger, Chorthippus pullus, Aiolopus thalassinus, Acrida ungarica and Oedaleus decorus. The high species diversity of grasshoppers and bush-crickets with a significant proportion of endangered and rare species underscores the crucial importance of abandoned military sites for the conservation of this insect group. [ABSTRACT FROM AUTHOR]