Taking stock after six years – the first results of an ongoing project to establish new populations of a regionally endangered grasshopper

This data represents the sum of specimens translocated in each occasion between 2018 and 2024 from natural source populations of the large banded grasshopper (Arcyptera fusca, Acrididae, Orthoptera) in Bükk and Börzsöny Mountains, NE Hungary, to altogether 5 recipient sites in the same mountain ranges, and the estimation of the newly established populations during a subsequent monitoring year by year in each recipient site. This study was conducted in a species conservation project in Hungary, where the main aim was to establish new populations of the regionally endangered large bandad grasshopper there. A. fusca individuals were translocated to five mountain meadows from nearby source populations, in some cases with repeated translocations of smaller numbers (30-50 individuals) between 2018 and 2024. The size of the new populations was estimated yearly by the transect method. We estimated the population size on each occasion by multiplying the number of individuals detected in the tran..., , # Taking stock after six years – the first results of an ongoing project to establish new populations of a regionally endangered grasshopper

Dataset DOI: [10.5061/dryad.c2fqz61pg](10.5061/dryad.c2fqz61pg)

## Description of the data and file structure

This data represents the sum of specimens translocated in each occasion between 2018 and 2024 from natural source populations of the large banded grasshopper (*Arcyptera fusca*, Acrididae, Orthoptera) in Bükk and Börzsöny Mountains, NE Hungary, to altogether five recipient sites in the same mountain ranges, and the estimation of the newly established populations during a subsequent monitoring year by year in each recipient site.

### Files and variables

#### File: Arcyptera_fusca_population_data.xlsx

**Description:** The size of the newly established *Arcyptera fusca* populations was estimated after the first translocation's year yearly by transect method. We estimated the population size on each occasion by multiplying the number of i...,