When it is recorded
Jan0
Feb0
Mar148
Apr742
May518
Jun58
Jul29
Aug16
Sep209
Oct201
Nov78
Dec4
GBIF records by month, 2000–2025 (all years combined).
Where it is recorded
| # | County | Nation | Records | Share |
|---|---|---|---|---|
| 1 | Powys | Wales | 417 | |
| 2 | Gwynedd | Wales | 200 | |
| 3 | Carmarthenshire | Wales | 108 | |
| 4 | Pembrokeshire | Wales | 105 | |
| 5 | Ceredigion | Wales | 94 | |
| 6 | Highland | Scotland | 93 | |
| 7 | Isle of Anglesey | Wales | 81 | |
| 8 | Dumfries and Galloway | Scotland | 78 | |
| 9 | Conwy | Wales | 78 | |
| 10 | Monmouthshire | Wales | 59 | |
| 11 | Denbighshire | Wales | 50 | |
| 12 | Worcestershire | England | 49 | |
| 13 | Aberdeenshire | Scotland | 45 | |
| 14 | Perth and Kinross | Scotland | 42 | |
| 15 | Scottish Borders | Scotland | 40 |
93 England407 Scotland1,492 Wales1 Northern Ireland
Records per county (GADM level 2) and per nation; one record can count towards several areas. 43 counties in all.
About this species
- Records since 2000
- 2,004
- Peak month
- April
- Counties with records
- 43
- Group
- Mayflies
- NBN Atlas records since 2000
- 2,005
- Most recorded in
- Powys, Gwynedd, Carmarthenshire, Pembrokeshire, Ceredigion, Highland, Isle of Anglesey, Dumfries and Galloway, Conwy, Monmouthshire, Denbighshire
- Conservation designations
- GB Red List (2001 IUCN criteria)
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Ephemeroptera
- Family
- Caenidae
- Genus
- Caenis
- Name with authority
- Caenis rivulorum Eaton, 1884
- Described
- 1884
- Contributing datasets
- 9
Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q7708204 · GBIF 6932828