On the taxonomy of water mites (Acari: Hydrachnidia) described from the Palaearctic, part 1: Hydrachnidae, Limnocharidae and Eylaidae Author Davids, Kees Author Sabatino, Antonio Di Author Gerecke, Reinhard Author Gledhill, Terence Author Smit, Harry text Zootaxa 2005 1061 36 64 journal article 10.5281/zenodo.170186 d91ae7dd-a600-4f24-a890-7201060d61b6 1175­5326 170186 Hydrachna papilligera K. Viets, 1919 Species incerta Material examined: Holotype deutonymph SMF 941, Germany , Braunschweig, Teich bei Weddel, 8.7.1910 Kühne. Discussion: This species was described from a single deutonymph. Later, the author himself proposed its synonymy to H. skorikowi (see K. Viets 1936 ). In view of the difficulties of associating nymphs to conspecific adults, it must be considered a species incerta .