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RETRACTED ARTICLE: Additional new species of Grouvellinus Champion 1923 (Insecta, Coleoptera, Elmidae) discovered by citizen scientists and DNA barcoded in the field applying a novel MinION-based workflow

Statement of Retraction We, the Editor and Publisher of Journal of Natural History, have retracted the following article: Hendrik Freitag, Christian Molls, Aglaia M. Bouma, Jhoana M. Garces, Marzia Rossato, Emanuela Cosentino & Massimo Delledonne (2019) Additional new species of Grouvellinus Champion 1923 (Insecta, Coleoptera, Elmidae) discovered by citizen scientists and DNA barcoded in the field applying a novel MinION-based workflow, Journal of Natural History, 53:41-42, 2593-2620, DOI: 10.1080/00222933.2019.1709669 The collection permit from Sabah Biodiversity Centre in Malaysia does not allow for the publication of these data, which formed the basis of the article above. The authors were made aware of this problem with their permit by the Sabah Biodiversity Centre following publication of their paper, and informed Taylor & Francis promptly. They have been fully cooperative with the publisher and the Sabah Biodiversity Centre and have agreed to the necessary action. We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as “Retracted”.