About Earthynature of Britain
  1. Home
  2. Species
  3. Pond Olive
Species · Mayflies

Pond Olive

Cloeon dipterum

551Records since 2000
JulyPeak month
51Counties with records

When it is recorded

Jan0
Feb1
Mar39
Apr29
May101
Jun55
Jul112
Aug103
Sep43
Oct14
Nov5
Dec0

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

Where it is recorded

#CountyNationRecordsShare
1Kent England40
2Cambridgeshire England34
3Worcestershire England31
4Norfolk England28
5Suffolk England26
6Lincolnshire England17
7Surrey England14
8Monmouthshire Wales13
9Essex England12
10Powys Wales10
11Nottinghamshire England9
12Sefton England9
13Somerset England8
14Carmarthenshire Wales8
15North Yorkshire England6
379 England23 Scotland73 Wales3 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
551
Peak month
July
Counties with records
51
Scientific name
Cloeon dipterum
Group
Mayflies
NBN Atlas records since 2000
390
Conservation designations
GB Red List (2001 IUCN criteria)
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Ephemeroptera
Family
Baetidae
Genus
Cloeon
Name with authority
Cloeon dipterum (Linnaeus, 1761)
Described
1761
Contributing datasets
28

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q691414 · GBIF 1407879