When it is recorded
Jan4
Feb4
Mar6
Apr8
May7
Jun4
Jul12
Aug6
Sep11
Oct2
Nov2
Dec8
GBIF records by month, 2000–2025 (all years combined).
Where it is recorded
| # | County | Nation | Records | Share |
|---|---|---|---|---|
| 1 | North Yorkshire | England | 11 | |
| 2 | Oxfordshire | England | 8 | |
| 3 | Cambridgeshire | England | 6 | |
| 4 | Northamptonshire | England | 6 | |
| 5 | Surrey | England | 3 | |
| 6 | East Riding of Yorkshire | England | 3 | |
| 7 | Doncaster | England | 3 | |
| 8 | Somerset | England | 2 | |
| 9 | Cheshire East | England | 2 | |
| 10 | Bedford | England | 2 | |
| 11 | Dudley | England | 2 | |
| 12 | Kent | England | 1 | |
| 13 | Cornwall | England | 1 | |
| 14 | Bradford | England | 1 |
74 England
Records per county (GADM level 2) and per nation; one record can count towards several areas. 14 counties in all.
About this species
- Records since 2000
- 74
- Peak month
- July
- Counties with records
- 14
- IUCN Red List
- Least Concern
- Scientific name
- Unio tumidus
- Group
- Molluscs
- Kingdom
- Animalia
- Phylum
- Mollusca
- Class
- Bivalvia
- Order
- Unionida
- Family
- Unionidae
- Genus
- Unio
- Name with authority
- Unio tumidus Retzius, 1788
- Described
- 1788
Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q577438 · GBIF 4374773