Abstract
Orthopteroid insects (Caelifera, Ensifera, Mantodea) are characteristic of grassland ecosystems. They are often key species in grassland food webs, and many species have very specific requirements concerning habitat structure. Thus, orthopteroid insects are valued and widely used indicators in grassland ecology. Here we propose a standardised surveying methodology for orthopteroidinsects in EDGG Biodiversity Plots. A variety of methods to survey orthopteroid insects have been used in the past, most of them based on sweep netting along a defined transect. The method proposed here is also based on this principle, but additionally utilises an exhaustive search to capture total species richness and estimate the frequency of the surveyed species. The method can be used in any grassland survey that is based on EDGG Biodiversity Plot and similar sampling designs. It was tested during the EDGG Field Workshop 2019 in Ar-menia, and has proven its applicability in a wide range of different grassland type