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Species · Mayflies

Large Dark Olive

Baetis rhodani

1,228Records since 2000
AprilPeak month
65Counties with records

When it is recorded

Jan3
Feb5
Mar110
Apr277
May203
Jun15
Jul47
Aug21
Sep155
Oct236
Nov125
Dec14

GBIF records by month, 2000–2025 (all years combined).

Where it is recorded

#CountyNationRecordsShare
1Highland Scotland218
2Aberdeenshire Scotland126
3Dumfries and Galloway Scotland115
4Perth and Kinross Scotland76
5Pembrokeshire Wales46
6Scottish Borders Scotland45
7Argyll and Bute Scotland39
8North Ayrshire Scotland34
9Fife Scotland31
10South Ayrshire Scotland26
11Moray Scotland24
12Angus Scotland24
13Stirling Scotland22
14Powys Wales21
15East Ayrshire Scotland17
53 England882 Scotland143 Wales9 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 65 counties in all.

About this species

Records since 2000
1,228
Peak month
April
Counties with records
65
Scientific name
Baetis rhodani
Group
Mayflies
NBN Atlas records since 2000
191
Conservation designations
GB Red List (2001 IUCN criteria)
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Ephemeroptera
Family
Baetidae
Genus
Baetis
Name with authority
Baetis rhodani (Pictet, 1843)
Described
1843
Contributing datasets
24

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q732867 · GBIF 4481106