When it is recorded
Jan40
Feb44
Mar59
Apr78
May107
Jun119
Jul19
Aug21
Sep26
Oct17
Nov40
Dec91
GBIF records by month, 2000–2025 (all years combined).
Where it is recorded
| # | County | Nation | Records | Share |
|---|---|---|---|---|
| 1 | Milton Keynes | England | 285 | |
| 2 | Dorset | England | 81 | |
| 3 | Cambridgeshire | England | 42 | |
| 4 | Aberdeenshire | Scotland | 32 | |
| 5 | Oxfordshire | England | 14 | |
| 6 | Essex | England | 13 | |
| 7 | Devon | England | 9 | |
| 8 | Highland | Scotland | 7 | |
| 9 | Gwynedd | Wales | 7 | |
| 10 | North Yorkshire | England | 6 | |
| 11 | Powys | Wales | 6 | |
| 12 | City of Edinburgh | Scotland | 4 | |
| 13 | Aberdeen City | Scotland | 4 | |
| 14 | Moray | Scotland | 3 | |
| 15 | Midlothian | Scotland | 2 |
286 England30 Scotland14 Wales
Records per county (GADM level 2) and per nation; one record can count towards several areas. 17 counties in all.
About this species
- Records since 2000
- 661
- Peak month
- June
- Counties with records
- 17
- Group
- True flies
- NBN Atlas records since 2000
- 326
- Most recorded in
- Milton Keynes, Dorset
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Diptera
- Family
- Chironomidae
- Genus
- Tvetenia
- Name with authority
- Tvetenia calvescens (Edwards, 1929)
- Described
- 1929
- Contributing datasets
- 4
Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q13849768 · GBIF 1446288