When it is recorded
Jan3
Feb16
Mar435
Apr1,386
May755
Jun63
Jul56
Aug41
Sep667
Oct683
Nov321
Dec14
GBIF records by month, 2000–2025 (all years combined).
Where it is recorded
| # | County | Nation | Records | Share |
|---|---|---|---|---|
| 1 | Powys | Wales | 916 | |
| 2 | Gwynedd | Wales | 494 | |
| 3 | Ceredigion | Wales | 283 | |
| 4 | Carmarthenshire | Wales | 271 | |
| 5 | Denbighshire | Wales | 261 | |
| 6 | Pembrokeshire | Wales | 236 | |
| 7 | Conwy | Wales | 234 | |
| 8 | Highland | Scotland | 185 | |
| 9 | Wrexham | Wales | 159 | |
| 10 | Dumfries and Galloway | Scotland | 113 | |
| 11 | Worcestershire | England | 108 | |
| 12 | Aberdeenshire | Scotland | 104 | |
| 13 | Monmouthshire | Wales | 99 | |
| 14 | Perth and Kinross | Scotland | 80 | |
| 15 | Isle of Anglesey | Wales | 56 |
172 England767 Scotland3,468 Wales7 Northern Ireland
Records per county (GADM level 2) and per nation; one record can count towards several areas. 51 counties in all.
About this species
- Records since 2000
- 4,445
- Peak month
- April
- Counties with records
- 51
- Scientific name
- Rhithrogena semicolorata
- Group
- Mayflies
- NBN Atlas records since 2000
- 4,426
- Most recorded in
- Powys, Gwynedd, Ceredigion, Carmarthenshire, Denbighshire, Pembrokeshire, Conwy, Highland, Wrexham, Dumfries and Galloway, Worcestershire, Aberdeenshire +4
- Conservation designations
- GB Red List (2001 IUCN criteria)
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Ephemeroptera
- Family
- Heptageniidae
- Genus
- Rhithrogena
- Name with authority
- Rhithrogena semicolorata (Curtis, 1834)
- Described
- 1834
- Contributing datasets
- 19
Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q14267087 · GBIF 4481359