During fieldwork performed by students of Helicon institute for vocational education Den Bosch one specimen of Bithynia tentaculata forma producta was found in a canal south of ’s-Hertogenbosch, the Netherlands. De reason for the great height of the shell is discussed. Because of climate change, more large specimens may be expected in the future.

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Spirula

CC BY-NC 4.0 NL ("Naamsvermelding-NietCommercieel")

Nederlandse Malacologische Vereniging

K. Margry. (2017). Grote diepslak Bithynia tentaculata forma producta Menke, 1828 (Gastropoda, Bithyniidae) in een kanaal bij ’s-Hertogenbosch. Spirula, 412, 19–20.