Hirudidae
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Apeltunvatnet | Vestland, Norway | 3 | 2 | 0 | 2009-06-08 | |
| Dam ved idrettsplassen i Sylling | Buskerud, Norway | 11 | 1 | 0 | 2013-09-06 | |
| Dam ved Vestbøvarden | Rogaland, Norway | 1 | 1 | 0 | 2009-05-30 | |
| Dælivannet | Akershus, Norway | 2 | 1 | 0 | 1991-09-07 | |
| ellingsøy | Møre og Romsdal, Norway | 2 | 2 | 0 | 2011-06-08 | |
| Estenstadmarka | Trøndelag, Norway | 4 | 2 | 0 | 2013-06-07 | |
| Fossevatna naturreservat | Vestland, Norway | 2 | 1 | 1 | 2006-05-04 | |
| Glitredammen | Akershus, Norway | 1 | 1 | 0 | 2004-09-03 | |
| Haukelandsvatnet | Vestland, Norway | 1 | 1 | 0 | 2004-10-14 | |
| Igeltjønna | Trøndelag, Norway | 1 | 1 | 0 | 2009-09-08 | |
| Jaren skole | Innlandet, Norway | 1 | 1 | 0 | 2013-09-27 | |
| Jåbekkvannet | Agder, Norway | 1 | 1 | 0 | 1991-06-11 | |
| Kolbjørnviksjøen | Østfold, Norway | 2 | 1 | 0 | 1992-09-02 | |
| Kristianborgvannet | Vestland, Norway | 2 | 1 | 1 | 2015-05-29 | |
| Kverndammen | Telemark, Norway | 3 | 1 | 0 | 1991-08-30 | |
| Lianvannet | Trøndelag, Norway | 1 | 1 | 0 | 2021-09-03 | |
| Liavannet | Vestland, Norway | 1 | 1 | 0 | 2020-06-12 | |
| Ljøgodttjern | Akershus, Norway | 2 | 1 | 0 | 1990-05-31 | |
| Lommedalselva 1 | Akershus, Norway | 1 | 1 | 0 | 2008-10-22 | |
| Losby besøksgård | Akershus, Norway | 1 | 1 | 0 | 2009-06-23 | |
| Mildevatnet | Vestland, Norway | 1 | 1 | 0 | 2012-04-26 | |
| Neshalvøya | Vestland, Norway | 1 | 1 | 0 | 2012-04-04 | |
| Nesttunvannet | Vestland, Norway | 1 | 1 | 0 | 1991-06-06 | |
| Nykkjavatnet | Rogaland, Norway | 1 | 1 | 1 | 2009-05-30 | |
| Rena og omegn | Innlandet, Norway | 1 | 1 | 1 | 2020-06-11 | |
| Rossevatn | Rogaland, Norway | 1 | 1 | 0 | 1991-09-17 | |
| Sagtjernet | Innlandet, Norway | 1 | 1 | 0 | 1992-06-16 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Skirstadtjernet | Innlandet, Norway | 1 | 1 | 0 | 2012-09-26 | |
| Skoltjønna | Nordland, Norway | 1 | 1 | 0 | 2013-09-26 | |
| Skranevatnet | Vestland, Norway | 2 | 1 | 0 | 2013-03-21 | |
| Stavsjø | Innlandet, Norway | 1 | 1 | 0 | 1991-10-14 | |
| Stidam Øst | Trøndelag, Norway | 1 | 1 | 0 | 2014-05-19 | |
| Tornesvatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-06-07 |