Occurrence records 

species:  Ecdyonurus venosus Date: 2024-05-09 Scotland OSGR: NO108701

Data resource: Mayfly (Ephemeroptera) records from Britain and Ireland, via iRecord Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-10-18 Wales OSGR: SH6264866215

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-10-18 Wales OSGR: SH6264866215

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-10-09 Wales OSGR: SJ0321709781

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-09-13 Wales OSGR: SH8508139258

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-09-07 Wales OSGR: SH7370052302

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-09-05 Wales OSGR: SH7690748071

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-09-05 Wales OSGR: SH8062551602

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-09-05 Wales OSGR: SH7797148628

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-08-24 England OSGR: NY815179

Data resource: Mayfly (Ephemeroptera) records from Britain and Ireland, via iRecord Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-08-21 England OSGR: SD81195446

Data resource: Mayfly (Ephemeroptera) records from Britain and Ireland, via iRecord Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-08-10 Wales OSGR: SH4934662210

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-08-10 Wales OSGR: SH6290056602

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-07-01 England OSGR: SK12049865

Data resource: Mayfly (Ephemeroptera) records from Britain and Ireland, via iRecord Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-05-04 Wales OSGR: SH4000540349

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-04-28 Wales OSGR: SH7370052302

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-04-23 Wales OSGR: SH6066726999

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-04-20 Wales OSGR: SJ0321709781

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2023-04-20 Wales OSGR: SJ0321709781

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record

species:  Ecdyonurus venosus Date: 2022-12-01 Wales OSGR: SH7160035302

Data resource: KiEco Freshwater Ecology: River Macroinvertebrates Basis of record: Human observation View record