When it is recorded
Jan5
Feb5
Mar21
Apr23
May63
Jun144
Jul153
Aug45
Sep130
Oct10
Nov8
Dec3
GBIF records by month, 2000–2025 (all years combined).
Where it is recorded
| # | County | Nation | Records | Share |
|---|---|---|---|---|
| 1 | North Yorkshire | England | 135 | |
| 2 | Gwynedd | Wales | 50 | |
| 3 | Redcar and Cleveland | England | 45 | |
| 4 | Devon | England | 13 | |
| 5 | Cumbria | England | 12 | |
| 6 | Powys | Wales | 12 | |
| 7 | Swansea | Wales | 9 | |
| 8 | Herefordshire, County of | England | 6 | |
| 9 | Worcestershire | England | 5 | |
| 10 | Conwy | Wales | 4 | |
| 11 | Pembrokeshire | Wales | 3 | |
| 12 | Highland | Scotland | 2 | |
| 13 | Carmarthenshire | Wales | 2 | |
| 14 | Denbighshire | Wales | 2 | |
| 15 | Mid Ulster | Northern Ireland | 2 |
508 England27 Scotland92 Wales2 Northern Ireland
Records per county (GADM level 2) and per nation; one record can count towards several areas. 18 counties in all.
About this species
- Records since 2000
- 629
- Peak month
- July
- Counties with records
- 18
- Scientific name
- Margaritifera margaritifera
- Group
- Molluscs
- Most recorded in
- North Yorkshire, Gwynedd
- Kingdom
- Animalia
- Phylum
- Mollusca
- Class
- Bivalvia
- Order
- Unionida
- Family
- Margaritiferidae
- Genus
- Margaritifera
- Name with authority
- Margaritifera margaritifera (Linnaeus, 1758)
- Described
- 1758
- Contributing datasets
- 13
Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · GBIF 7911174