| Helobdella stagnalis | | 2014-09-03 | 2014-09-02 | Langvatnet, Tromsøya (Troms, Norway) | |
| Helobdella stagnalis | | 2013-09-12 | 2013-08-22 | Norheimsskogen og området rundt skolen (Rogaland, Norway) |  |
| Helobdella stagnalis | | 2004-11-03 | 2004-10-27 | Mildevatnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1990-06-26 | 1990-06-26 | Tretjønnet (Agder, Norway) | |
| Helobdella stagnalis | | 1992-05-04 | 1992-05-04 | Frøylandsvatnet (Rogaland, Norway) | |
| Helobdella stagnalis | | 1989-09-21 | 1989-09-21 | Stensrudtjern (Oslo, Norway) | |
| Helobdella stagnalis | | 1990-09-13 | 1990-09-13 | Molbekktjernet (Østfold, Norway) | |
| Helobdella stagnalis | | 1992-09-11 | 1992-09-11 | Prestvatn (Agder, Norway) | |
| Helobdella stagnalis | | 1991-09-25 | 1991-09-25 | Lille luktvann (Nordland, Norway) | |
| Helobdella stagnalis | | 1992-06-12 | 1992-06-12 | Harestuvannet (Akershus, Norway) | |
| Helobdella stagnalis | | 1991-09-13 | 1991-09-13 | Harestuvannet (Akershus, Norway) | |
| Helobdella stagnalis | | 1990-09-04 | 1990-09-04 | Harestuvannet (Akershus, Norway) | |
| Helobdella stagnalis | | 1990-09-22 | 1990-09-22 | Madsvannet (Nordland, Norway) | |
| Helobdella stagnalis | | 1992-09-17 | 1992-09-17 | Jarenvannet (Innlandet, Norway) | |
| Helobdella stagnalis | | 1990-09-10 | 1990-09-10 | Myravatnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1989-09-14 | 1989-09-14 | Myravatnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1989-09-27 | 1989-09-27 | Lianvatnet (Trøndelag, Norway) | |
| Helobdella stagnalis | | 1989-09-25 | 1989-09-25 | Opsangervatnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1992-10-29 | 1992-10-29 | Moensvatnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1989-11-07 | 1989-11-07 | Moensvatnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1990-05-22 | 1990-05-22 | Svartaholtjørnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1989-09-21 | 1989-09-21 | Semsvannet (Akershus, Norway) | |
| Helobdella stagnalis | | 1989-09-13 | 1989-09-13 | Skarvatnet (Møre og Romsdal, Norway) | |
| Helobdella stagnalis | | 1989-09-05 | 1989-09-05 | Stavsjø (Innlandet, Norway) | |
| Helobdella stagnalis | | 1991-10-17 | 1991-10-17 | Stavsjø (Innlandet, Norway) | |
| Helobdella stagnalis | | 1991-06-08 | 1991-06-08 | Stavsjø (Innlandet, Norway) | |
| Helobdella stagnalis | | 1990-09-29 | 1990-09-29 | Stavsjø (Innlandet, Norway) | |
| Helobdella stagnalis | | 1989-09-05 | 1989-09-05 | Stavsjø (Innlandet, Norway) | |
| Helobdella stagnalis | | 1993-06-01 | 1993-06-01 | Frøylandsvatnet (Rogaland, Norway) | |
| Helobdella stagnalis | | 1992-06-03 | 1992-06-03 | Frøylandsvatnet (Rogaland, Norway) | |
| Helobdella stagnalis | | 1992-05-20 | 1992-05-20 | Frøylandsvatnet (Rogaland, Norway) | |
| Helobdella stagnalis | | 1990-06-01 | 1990-06-01 | Longvatnet (Rogaland, Norway) | |
| Helobdella stagnalis | | 1989-08-24 | 1989-08-24 | Vålåsjøen (Innlandet, Norway) | |
| Helobdella stagnalis | | 1991-09-16 | 1991-09-16 | Årungen (Akershus, Norway) | |
| Helobdella stagnalis | | 1990-06-07 | 1990-06-07 | Tussvatnet (Nordland, Norway) | |
| Helobdella stagnalis | | 1989-09-14 | 1989-09-14 | Tussvatnet (Nordland, Norway) | |
| Helobdella stagnalis | | 1990-08-29 | 1990-08-29 | Kolbjørnviksjøen (Østfold, Norway) | |
| Helobdella stagnalis | | 1993-05-25 | 1993-05-25 | Rossevatn (Rogaland, Norway) | |
| Helobdella stagnalis | | 1991-05-27 | 1991-05-27 | Rossevatn (Rogaland, Norway) | |
| Helobdella stagnalis | | 1990-05-31 | 1990-05-31 | Rossevatn (Rogaland, Norway) | |
| Helobdella stagnalis | | 1989-09-06 | 1989-09-06 | Rossevatn (Rogaland, Norway) | |
| Helobdella stagnalis | | 1991-09-05 | 1991-09-05 | Kjemsjøen (Innlandet, Norway) | |
| Helobdella stagnalis | | 1992-09-03 | 1992-09-03 | Rundvannet (Troms, Norway) | |
| Helobdella stagnalis | | 1992-06-22 | 1992-06-22 | Rundvannet (Troms, Norway) | |
| Helobdella stagnalis | | 1991-06-18 | 1991-06-18 | Rundvannet (Troms, Norway) | |
| Helobdella stagnalis | | 1990-09-04 | 1990-09-04 | Bergvikvatnet (Nordland, Norway) | |
| Helobdella stagnalis | | 1993-06-04 | 1993-06-04 | Husavatnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1992-09-18 | 1992-09-18 | Husavatnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1992-06-01 | 1992-06-01 | Husavatnet (Vestland, Norway) | |
| Helobdella stagnalis | | 1989-09-13 | 1989-09-13 | Skjelbreidvatnet (Vestland, Norway) | |