For the retrospective analysis, more than 700 voucher specimens were found for the Hare’s-tail cottongrass and more than 1,000 for the False heath fritillary in collections in Switzerland – from Geneva to Basel. Where not already done, each specimen was entered into a database and the location was recorded and georeferenced using the original label. In a next step, a selection of the vouchers will now be made. A report on part of our research on collection specimens of the False heath fritillary has just been written and published in the ETH journal GLOBE: https://ethz.ch/en/news-and-events/eth-news/news/2021/06/silent-witnesses.html
![False heath fritillary, Melitaea diamina, in the Entomological Collection Zurich.](https://gendiv.ethz.ch/wp-content/uploads/2021/07/21-05-04_Enthomologische_Sammlung_14-edited.jpg)