Albemarle County, Virginia, USA    (Ref.: Kepner WM, Carter JS 1930)

Hasenmoor, Schleswig-Holstein, Germany    (Ref.: Rixen J-U 1961)

Kaltenhof, Schleswig-Holstein, Germany    (Ref.: Rixen J-U 1961)

Kroog, Schleswig-Holstein, Germany    (Ref.: Rixen J-U 1961)

Elmschenhagen, Schleswig-Holstein, Germany    (Ref.: Rixen J-U 1961)

Lebrader Teich, Schleswig-Holstein, Germany    (Ref.: Bülow T von 1951)

ViLeopoldina, east of Lapa a suburb of São Paulo, Brazil    (Ref.: Marcus E 1945)

Lake of the River Bariguy (Barigui), outskirts of Curitiba (Corityba, Curytiba), Paraná, Brazil    (Ref.: Marcus E 1945)

Jardim, São Paulo, Brazil    (Ref.: Marcus E 1945)

Santa Rita do Passa Quatro (Santa Rita), interior State of São Paulo, Brazil    (Ref.: Marcus E 1945)

Lake close to the river Tietê, in the suburb of Canindé (Caninde), city of São Paulo (San Paulo), Brazil    (Ref.: Marcus E 1945)

River Pinheiros and its tributaries, near São Paulo (San Paulo), Brazil    (Ref.: Marcus E 1945)

Pond, in the suburb of Canindé (Caninde), north of the city of São Paulo (San Paulo), Brazil    (Ref.: Marcus E 1945)

Southeastern New York State, USA    (Ref.: Kolasa J, Strayer D, Bannon-O'Donnell E 1987)

Valencia (Valence, Valenza), Spain    (Ref.: Gieysztor M 1931)

Albufera de Valencia (Albufera, La Albufera), Spain    (Ref.: Gieysztor M 1931)

Leningrad Province (Sankt-Peterburg, Saint Petersburg), Russia    (Ref.: Nasonov NV 1926)

Shannon River, Ireland    (Ref.: Southern R 1936)

Portumna, Ireland    (Ref.: Southern R 1936)

Tiobraid Arann (Tipperary), Ireland    (Ref.: Southern R 1936)

Carrigahorig, Ireland    (Ref.: Southern R 1936)

Lorrha, Ireland    (Ref.: Southern R 1936)

North of Vaag (Sudero), Faroes, Ryskidalur Lake, Faroe Islands    (Ref.: Steinböck O 1931)

London, England, United Kingdom    (Ref.: Whitehead H 1913)

Cronton, United Kingdom    (Ref.: Young JO 1970)

Kennet-Avon Canal, United Kingdom    (Ref.: Young JO 1970)

Berkshire (Berks), United Kingdom    (Ref.: Young JO 1970)

Idwall, Caernarvonshire (Caernarvon, Carnarvonshire, Arfon), North Wales, United Kingdom    (Ref.: Young JO 1973)

|quot;El Tigre|quot; lake, Paraná River, near the city of Santa Fé, Argentina    (Ref.: Noreña-Janssen C 1995)

Retezat (Retiezat, Retezatul) Mountains, Romania    (Ref.: Mack-Fira V 1974)

Plain of Romania (Romanian Plain), Ilfov County, Romania    (Ref.: Mack-Fira V 1974)

Razelm-Sinoë, Siut-Ghiol Lake (Siutghiol, Siut Griol), Romania    (Ref.: Mack-Fira V 1974)

Razelm-Sinoë, Tasaul Lake (Tashaul), Romania    (Ref.: Mack-Fira V 1974)

Razelm-Sinoë, Razelmul Mare (Dolosman), Golovitza, Portitza, Sinoë Lake (Grindul Lupilor), Danube Delta, Romania    (Ref.: Mack-Fira V 1974)

Danube Delta, Romania    (Ref.: Mack-Fira V 1974)

Razelm-Sinoë, Northern Bay-Sulina, Romania    (Ref.: Mack-Fira V 1974)

Lausanne, Switzerland    (Ref.: Du Plessis G 1897)

Bellerive, Switzerland    (Ref.: Du Plessis G 1897)

Lac de Neuchatel (Neuenburger See, Neuenburg, Neuenburgersee, Neuchtel), Switzerland    (Ref.: Thiébaud M, Favre J 1906)

Cork County, Ireland    (Ref.: Hartog M 1893)

Strawberry Hill, United Kingdom    (Ref.: Jane FW 1926)

Epping Forest, United Kingdom    (Ref.: Jane FW 1926)

Theydon Bois, United Kingdom    (Ref.: Jane FW 1926)

Ribadil River in Riba de Mouro, Spain    (Ref.: Noreña C., Damborenea C., Faubel A. & Brusa F. 2007)

Arnoia River near O Viso, Spain    (Ref.: Noreña C., Damborenea C., Faubel A. & Brusa F. 2007)