When it is recorded
Jan2
Feb7
Mar16
Apr14
May18
Jun10
Jul10
Aug6
Sep40
Oct73
Nov38
Dec23
GBIF records by month, 2000–2025 (all years combined).
Where it is recorded
| # | County | Nation | Records | Share |
|---|---|---|---|---|
| 1 | Essex | England | 25 | |
| 2 | Oxfordshire | England | 21 | |
| 3 | Northamptonshire | England | 18 | |
| 4 | Cambridgeshire | England | 16 | |
| 5 | Surrey | England | 16 | |
| 6 | Suffolk | England | 13 | |
| 7 | Kent | England | 10 | |
| 8 | Milton Keynes | England | 8 | |
| 9 | Somerset | England | 7 | |
| 10 | Gloucestershire | England | 6 | |
| 11 | Cornwall | England | 3 | |
| 12 | West Berkshire | England | 3 | |
| 13 | Sandwell | England | 3 | |
| 14 | Norfolk | England | 2 | |
| 15 | Lincolnshire | England | 2 |
249 England9 Wales
Records per county (GADM level 2) and per nation; one record can count towards several areas. 23 counties in all.
About this species
- Records since 2000
- 258
- Peak month
- October
- Counties with records
- 23
- IUCN Red List
- Least Concern
- Group
- Molluscs
- Kingdom
- Animalia
- Phylum
- Mollusca
- Class
- Gastropoda
- Family
- Planorbidae
- Genus
- Ferrissia
- Name with authority
- Ferrissia californica (Rowell, 1863)
- Described
- 1863
Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q106294185 · GBIF 9520065