(10) Potamopyrgus antipodarum (Gray, 1843)

Status in U.K. – non-native.

The “ New Zealand mud snail”, or “Jenkin’s spire shell” Potamopyrgus antipodarum has been recorded from scrape samples at Loch of Stenness, each year since 2013 and also at The Grinds navigation buoy in 2014. It was mentioned as having been part of the Loch of Stenness invertebrate community since 1938 in a report commissioned by Scottish Natural Heritage (ICIT 2004).

Potamopyrgus antipodarum is widespread throughout the British Isles (Kerney 1999) and has become one of the most common freshwater snails in Britain (Heppell 2008).