Non-indigenous species. A–DAnisus cf. spirorbis (Linnaeus, 1758), LV 201503 E–FA. cf. spirorbis, RGM 1309801 G–IPlanorbis cf. planorbis (Linnaeus, 1758), LV 201504 J–LP. cf. planorbis, RGM 1309835 M Bithynia sp., juvenile, RGM 1309853 N Esperiana esperi (Férussac, 1823), RGM 1309792 O Lithoglyphus naticoides (Pfeiffer, 1828), RGM 1309832 P Valvata piscinalis (Müller, 1774), RGM 1310249. Scale bar equals 1 mm unless indicated otherwise. Note that all Planorbidae are figured at the same scale to facilitate comparison.