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Pale burrower mayfly (Ephoron virgo), swarming in the millions on street at night, appearing like snow. Mayflies recently hatched. Tudela, La Ribera de Navarra, Navarre, Spain. August 2019. Finalist i...
01633695
Eduardo Blanco / Pale burrower mayfly (Ephoron virgo), swarming in the millions on street at night, appearing like snow. Mayflies recently hatched. Tudela, La Ribera de Navarra, Navarre, Spain. August 2019. Finalist i...
Slow motion clip of Mayflies (Ephemeroptera) swarming, Bavaria, Germany, May.
01607926
Konrad Wothe / Slow motion clip of Mayflies (Ephemeroptera) swarming, Bavaria, Germany, May.
Slow motion clip of a Mallard (Anas platyrhynchos) duckling chasing and catching Mayfly (Ephemeroptera) emerging from River Kennet, Hungerford, Berkshire, England, UK, June.
01606663
John Waters / Slow motion clip of a Mallard (Anas platyrhynchos) duckling chasing and catching Mayfly (Ephemeroptera) emerging from River Kennet, Hungerford, Berkshire, England, UK, June.
Slow motion clip of a Brown trout (Salmo trutta) breaching to predate an adult Mayfly (Ephemoptera) emerged on the surface, River Kennet, Hungerford, Berkshire, England, UK, June.
01606655
John Waters / Slow motion clip of a Brown trout (Salmo trutta) breaching to predate an adult Mayfly (Ephemoptera) emerged on the surface, River Kennet, Hungerford, Berkshire, England, UK, June.
Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
01606651
John Waters / Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
01606642
John Waters / Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
Pink lady mayfly (Epeorus albertae) close up of eye of male, Madison River, Montana, USA, August.
01593633
Phil Savoie / Pink lady mayfly (Epeorus albertae) close up of eye of male, Madison River, Montana, USA, August.
Summer mayfly nymph (Siphlonurus lacustris), Europe, May.  Controlled conditions.
01531474
Jan Hamrsky / Summer mayfly nymph (Siphlonurus lacustris), Europe, May. Controlled conditions.
Summer mayfly nymphs (Siphlonurus lacustris), Europe, May.  Controlled conditions.
01531470
Jan Hamrsky / Summer mayfly nymphs (Siphlonurus lacustris), Europe, May. Controlled conditions.
Hacklegill mayfy nymph (Potamanthus luteus), Europe, July.  Controlled conditions.
01531438
Jan Hamrsky / Hacklegill mayfy nymph (Potamanthus luteus), Europe, July. Controlled conditions.
Pale burrower mayfly (Ephoron virgo) many hatching. Tudela, La Ribera de Navarra, Navarre, Spain. August. Finalist in the Nature Stories Competition of the Cadiz Photo Nature Competition 2019.
01633697
Eduardo Blanco / Pale burrower mayfly (Ephoron virgo) many hatching. Tudela, La Ribera de Navarra, Navarre, Spain. August. Finalist in the Nature Stories Competition of the Cadiz Photo Nature Competition 2019.
European mantis (Mantis religiosa) hunting swarming Pale burrower mayfly (Ephoron virgo), mayflies recently hatched. Tudela, La Ribera de Navarra, Navarre, Spain. August.
01633696
Eduardo Blanco / European mantis (Mantis religiosa) hunting swarming Pale burrower mayfly (Ephoron virgo), mayflies recently hatched. Tudela, La Ribera de Navarra, Navarre, Spain. August.
European mantis (Mantis religiosa) hunting swarming Pale burrower mayfly (Ephoron virgo), mayflies recently hatched. Tudela, La Ribera de Navarra, Navarre, Spain. August.
01633694
Eduardo Blanco / European mantis (Mantis religiosa) hunting swarming Pale burrower mayfly (Ephoron virgo), mayflies recently hatched. Tudela, La Ribera de Navarra, Navarre, Spain. August.
Pale burrower mayfly (Ephoron virgo) swarming around streetlights at night, with gecko (Tarentola mauritanica) inside lamp. Mayflies recently hatched. Tudela, La Ribera de Navarra, Navarre, Spain. Aug...
01633693
Eduardo Blanco / Pale burrower mayfly (Ephoron virgo) swarming around streetlights at night, with gecko (Tarentola mauritanica) inside lamp. Mayflies recently hatched. Tudela, La Ribera de Navarra, Navarre, Spain. Aug...
Brown mayfly (Ephemera vulgata) newly emerged, resting on riverside vegetation, River Avon, Lacock, Wiltshire, UK, May.
01630538
Nick Upton / Brown mayfly (Ephemera vulgata) newly emerged, resting on riverside vegetation, River Avon, Lacock, Wiltshire, UK, May.
Brown mayfly (Ephemera vulgata) newly emerged on a riverside nettle leaf, River Avon, Lacock, Wiltshire, UK, May.
01630537
Nick Upton / Brown mayfly (Ephemera vulgata) newly emerged on a riverside nettle leaf, River Avon, Lacock, Wiltshire, UK, May.
Furrow Orb weaver spider (Larinioides cornutus) near a Green drake mayfly (Ephemera danica) it has caught and wrapped in its riverside web, Lacock, Wiltshire, UK, May.
01614691
Nick Upton / Furrow Orb weaver spider (Larinioides cornutus) near a Green drake mayfly (Ephemera danica) it has caught and wrapped in its riverside web, Lacock, Wiltshire, UK, May.
Furrow Orb weaver spider (Larinioides cornutus) wrapping a Green drake mayfly (Ephemera danica) caught in its riverside web, Lacock, Wiltshire, UK, May.
01614690
Nick Upton / Furrow Orb weaver spider (Larinioides cornutus) wrapping a Green drake mayfly (Ephemera danica) caught in its riverside web, Lacock, Wiltshire, UK, May.
Common burrowing mayfly nymph (Ephemera danica), Eupope, June, controlled conditions
01608850
Jan Hamrsky / Common burrowing mayfly nymph (Ephemera danica), Eupope, June, controlled conditions
Common burrowing mayfly nymph (Ephemera danica), Eupope, June, controlled conditions
01608849
Jan Hamrsky / Common burrowing mayfly nymph (Ephemera danica), Eupope, June, controlled conditions
Summer mayfly nymph (Siphlonurus lacustris), underwater, Europe, June, controlled conditions
01608841
Jan Hamrsky / Summer mayfly nymph (Siphlonurus lacustris), underwater, Europe, June, controlled conditions
Summer mayfly nymphs (Siphlonurus lacustris) and Flathead mayfly nymph (Electrogena sp.), underwater, Europe, June, controlled conditions
01608840
Jan Hamrsky / Summer mayfly nymphs (Siphlonurus lacustris) and Flathead mayfly nymph (Electrogena sp.), underwater, Europe, June, controlled conditions
Summer mayfly nymph (Siphlonurus lacustris), underwater, Europe, June, controlled conditions
01608839
Jan Hamrsky / Summer mayfly nymph (Siphlonurus lacustris), underwater, Europe, June, controlled conditions
Flathead mayfly nymph (Electrogena sp.) and Stonefly nymph (Isoperla sp.), underwater, Europe, June, controlled conditions
01608838
Jan Hamrsky / Flathead mayfly nymph (Electrogena sp.) and Stonefly nymph (Isoperla sp.), underwater, Europe, June, controlled conditions
Flathead mayfly nymph (Electrogena sp.), clinging at the bottom, Europe, June, controlled conditions
01608837
Jan Hamrsky / Flathead mayfly nymph (Electrogena sp.), clinging at the bottom, Europe, June, controlled conditions
Mayfly nymph (Ephemerellidae), underwater, Europe, November, controlled conditions
01608836
Jan Hamrsky / Mayfly nymph (Ephemerellidae), underwater, Europe, November, controlled conditions
Female Mayfly (Ephemoptera) laying eggs on water surface, River Kennet, Hungerford, Berkshire, England, UK, June.
01606666
John Waters / Female Mayfly (Ephemoptera) laying eggs on water surface, River Kennet, Hungerford, Berkshire, England, UK, June.
Abstract shift-focus shot of glinting water reflections on the River Kennet, Hungerford, Berkshire, England, UK, June.
01606665
John Waters / Abstract shift-focus shot of glinting water reflections on the River Kennet, Hungerford, Berkshire, England, UK, June.
Adult Mayfly (Ephemoptera) in flight above the River Kennet, Hungerford, Berkshire, England, UK, June.
01606664
John Waters / Adult Mayfly (Ephemoptera) in flight above the River Kennet, Hungerford, Berkshire, England, UK, June.
Slow motion clip of a Mallard (Anas platyrhynchos) duckling chasing and catching Mayfly (Ephemeroptera) emerging from River Kennet, Hungerford, Berkshire, England, UK, June.
01606662
John Waters / Slow motion clip of a Mallard (Anas platyrhynchos) duckling chasing and catching Mayfly (Ephemeroptera) emerging from River Kennet, Hungerford, Berkshire, England, UK, June.
Female Mute Swan (Cygnus olor) swimming with eight cygnets. River Kennet, Hungerford, Berkshire, England, UK, June.
01606661
John Waters / Female Mute Swan (Cygnus olor) swimming with eight cygnets. River Kennet, Hungerford, Berkshire, England, UK, June.
Tracking shot from a female Mute Swan (Cygnus olor) to her eight cygnets feeding underwater, River Kennet, Hungerford, Berkshire, England, UK, June.
01606660
John Waters / Tracking shot from a female Mute Swan (Cygnus olor) to her eight cygnets feeding underwater, River Kennet, Hungerford, Berkshire, England, UK, June.
Slow motion clip of a Mallard (Anas platyrhynchos) duckling chasing and catching Mayfly (Ephemeroptera) emerging from the River Kennet, with a Mute swan (Cygnus olor) in the background, Hungerford, Be...
01606659
John Waters / Slow motion clip of a Mallard (Anas platyrhynchos) duckling chasing and catching Mayfly (Ephemeroptera) emerging from the River Kennet, with a Mute swan (Cygnus olor) in the background, Hungerford, Be...
Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
01606658
John Waters / Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
01606657
John Waters / Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
01606656
John Waters / Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) emerged on the surface, River Kennet, Hungerford, Berkshire, England, UK, June.
01606654
John Waters / Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) emerged on the surface, River Kennet, Hungerford, Berkshire, England, UK, June.
Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
01606653
John Waters / Slow motion clip of a Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) struggling to take off from water, River Kennet, Hungerford, Berkshire, England, UK, June.
Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) emerged on the surface, River Kennet, Hungerford, Berkshire, England, UK, June.
01606652
John Waters / Brown trout (Salmo trutta) predating an adult Mayfly (Ephemoptera) emerged on the surface, River Kennet, Hungerford, Berkshire, England, UK, June.
Scenic of the River Kennet during the Mayfly (Ephemoptera) hatching season, Hungerford, Berkshire, England, UK, June.
01606650
John Waters / Scenic of the River Kennet during the Mayfly (Ephemoptera) hatching season, Hungerford, Berkshire, England, UK, June.
Scenic of the River Kennet during the Mayfly (Ephemoptera) hatching season, with a Brown trout (Salmo trutta) jumping out of the water, Hungerford, Berkshire, England, UK, June.
01606649
John Waters / Scenic of the River Kennet during the Mayfly (Ephemoptera) hatching season, with a Brown trout (Salmo trutta) jumping out of the water, Hungerford, Berkshire, England, UK, June.
Moorhen (Gallinula chloropus) predating Mayflies (Ephemoptera) from the River Kennet, Hungerford, Berkshire, England, UK, June.
01606648
John Waters / Moorhen (Gallinula chloropus) predating Mayflies (Ephemoptera) from the River Kennet, Hungerford, Berkshire, England, UK, June.
Adult Mayfly (Ephemoptera) struggling to take off from River Kennet, Hungerford, Berkshire, England, UK, June.
01606647
John Waters / Adult Mayfly (Ephemoptera) struggling to take off from River Kennet, Hungerford, Berkshire, England, UK, June.
Adult Mayfly (Ephemoptera) struggling to take off from River Kennet, Hungerford, Berkshire, England, UK, June.
01606646
John Waters / Adult Mayfly (Ephemoptera) struggling to take off from River Kennet, Hungerford, Berkshire, England, UK, June.
Adult Mayfly (Ephemoptera) taking off from River Kennet, Hungerford, Berkshire, England, UK, June.
01606645
John Waters / Adult Mayfly (Ephemoptera) taking off from River Kennet, Hungerford, Berkshire, England, UK, June.
Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
01606644
John Waters / Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
01606643
John Waters / Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
01606641
John Waters / Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
01606640
John Waters / Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
01606639
John Waters / Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
01606638
John Waters / Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
01606637
John Waters / Adult Mayflies (Ephemoptera) in flight, River Kennet, Berkshire, Hungerford, Berkshire, England, UK, June.
Pond olive mayfly (Cloeon dipterum) female on a nettle stem,  Wiltshire, UK, May.
01593118
Nick Upton / Pond olive mayfly (Cloeon dipterum) female on a nettle stem, Wiltshire, UK, May.
Morning dun mayfly (Ephemerella excrucians) Bozeman, Montana, USA.
01593579
Phil Savoie / Morning dun mayfly (Ephemerella excrucians) Bozeman, Montana, USA.
Pale morning dun (Ephemerella dorothea Infrequens) pair mating in flight, Madison River, Montana, USA.
01593578
Phil Savoie / Pale morning dun (Ephemerella dorothea Infrequens) pair mating in flight, Madison River, Montana, USA.
Hex mayfly (Hexagenia limbata) Bozeman, Montana, USA. July.
01593576
Phil Savoie / Hex mayfly (Hexagenia limbata) Bozeman, Montana, USA. July.
Hex mayfly (Hexagenia limbata) Bozeman, Montana, USA. July.
01593575
Phil Savoie / Hex mayfly (Hexagenia limbata) Bozeman, Montana, USA. July.
Pale morning dun mayfly (Ephemerella Infrequens), female carrying egg ball she is about to deposit in river, Madison River, Montana, USA.
01593574
Phil Savoie / Pale morning dun mayfly (Ephemerella Infrequens), female carrying egg ball she is about to deposit in river, Madison River, Montana, USA.
Pale morning dun mayfly (Ephemerella Infrequens), female carrying egg ball she is about to deposit in river, Madison River, Montana, USA.
01593573
Phil Savoie / Pale morning dun mayfly (Ephemerella Infrequens), female carrying egg ball she is about to deposit in river, Madison River, Montana, USA.
Blue winged olive mayfly (Baetis tricaudatus) Bozeman, Montana, USA.
01593640
Phil Savoie / Blue winged olive mayfly (Baetis tricaudatus) Bozeman, Montana, USA.
Blue winged olive mayfly (Baetis tricaudatus) Bozeman, Montana, USA.
01593639
Phil Savoie / Blue winged olive mayfly (Baetis tricaudatus) Bozeman, Montana, USA.
Fishing hook #28 hook, the smallest available hook, 4mm in average size to imitate the Tiny blue wing olive mayfly (Pseudocloeon sp.) seen in centre of the penny, Bozeman, Montana, USA.
01593638
Phil Savoie / Fishing hook #28 hook, the smallest available hook, 4mm in average size to imitate the Tiny blue wing olive mayfly (Pseudocloeon sp.) seen in centre of the penny, Bozeman, Montana, USA.
Blue winged olive mayfly (Bateis sp.) male, Bozeman, Montana, USA.
01593637
Phil Savoie / Blue winged olive mayfly (Bateis sp.) male, Bozeman, Montana, USA.
Trico mayfly (Tricorythodes minutus) male, Bozeman, Montana, USA. September.
01593636
Phil Savoie / Trico mayfly (Tricorythodes minutus) male, Bozeman, Montana, USA. September.
Tiny blue wing olive (Acentrella turbida) on US penny, Bozeman, Montana, USA. August.
01593635
Phil Savoie / Tiny blue wing olive (Acentrella turbida) on US penny, Bozeman, Montana, USA. August.
Tiny blue wing  olive mayfly (Acentrella turbida) caught in spider web, Bozeman, Montana, USA.August.
01593634
Phil Savoie / Tiny blue wing olive mayfly (Acentrella turbida) caught in spider web, Bozeman, Montana, USA.August.
Pink lady mayfly (Epeorus albertae) close up of eye of male, Madison River, Montana, USA, August.
01593632
Phil Savoie / Pink lady mayfly (Epeorus albertae) close up of eye of male, Madison River, Montana, USA, August.
Pink lady mayfly (Epeorus albertae) close up of eyes of male , Madison River, Montana, USA, August.
01593631
Phil Savoie / Pink lady mayfly (Epeorus albertae) close up of eyes of male , Madison River, Montana, USA, August.
Summer mayfly (Siphlonurus lacustris) in flight, River Usk, Wales, UK, May.
01593616
Phil Savoie / Summer mayfly (Siphlonurus lacustris) in flight, River Usk, Wales, UK, May.
Summer mayfly (Siphlonurus lacustris) in flight, River Usk, Wales, UK, May.
01593615
Phil Savoie / Summer mayfly (Siphlonurus lacustris) in flight, River Usk, Wales, UK, May.
Summer mayfly (Siphlonurus lacustris) in flight, River Usk, Wales, UK, May.
01593614
Phil Savoie / Summer mayfly (Siphlonurus lacustris) in flight, River Usk, Wales, UK, May.
Summer mayfly (Siphlonurus lacustris) male, River Usk, Wales, UK, March.
01593613
Phil Savoie / Summer mayfly (Siphlonurus lacustris) male, River Usk, Wales, UK, March.
March brown mayfly (Rhithrogena germanica), mayfly, River Usk, Wales, UK, May.
01593612
Phil Savoie / March brown mayfly (Rhithrogena germanica), mayfly, River Usk, Wales, UK, May.
Yellow dun mayfly (Heptagenia sulphurea) female, River Usk, Wales, UK, May.
01593611
Phil Savoie / Yellow dun mayfly (Heptagenia sulphurea) female, River Usk, Wales, UK, May.
Blue winged olive mayfly (Baetis tricaudatus) flying in front of aspen leaves. Bozeman, Montana, USA. April.
01593641
Phil Savoie / Blue winged olive mayfly (Baetis tricaudatus) flying in front of aspen leaves. Bozeman, Montana, USA. April.
Mayfly (Ephemeroptera) dew covered, Klein Schietveld, Brasschaat, Belgium, April.
01582910
Bernard Castelein / Mayfly (Ephemeroptera) dew covered, Klein Schietveld, Brasschaat, Belgium, April.
Mayfly (Ephemera danica) male, River Usk, Monmouthshire, Wales, UK, May.
01575384
Phil Savoie / Mayfly (Ephemera danica) male, River Usk, Monmouthshire, Wales, UK, May.
Mayfly (Ephemera danica) male, River Usk, Monmouthshire, Wales, UK, May.
01575383
Phil Savoie / Mayfly (Ephemera danica) male, River Usk, Monmouthshire, Wales, UK, May.
Mayfly (Ephemera danica) male, River Usk, Monmouthshire, Wales, UK, May.
01575382
Phil Savoie / Mayfly (Ephemera danica) male, River Usk, Monmouthshire, Wales, UK, May.
Mayfly (Ephemera danica) male, River Usk, Monmouthshire, Wales, UK, May.
01575385
Phil Savoie / Mayfly (Ephemera danica) male, River Usk, Monmouthshire, Wales, UK, May.
Mayflies (Palingenia longicauda) swarming at sunset, Danube Delta, Romania. June.
01563589
Ingo Arndt / Mayflies (Palingenia longicauda) swarming at sunset, Danube Delta, Romania. June.
Mayflies (Palingenia longicauda) swarming at sunset, Danube Delta, Romania
01559439
Ingo Arndt / Mayflies (Palingenia longicauda) swarming at sunset, Danube Delta, Romania
Pendulous sedge (Carex pendula) with Mayflies (Ephemeroptera) in the background, Moseley Bog, Birmingham, England, UK, June.
01523900
Steve Downer / Pendulous sedge (Carex pendula) with Mayflies (Ephemeroptera) in the background, Moseley Bog, Birmingham, England, UK, June.
Mayflies (Ephemeroptera) flying above a stream, Moseley Bog, Birmingham, England, UK, June.
01523898
Steve Downer / Mayflies (Ephemeroptera) flying above a stream, Moseley Bog, Birmingham, England, UK, June.
Mayflies (Ephemeroptera) flying above a stream, Moseley Bog, Birmingham, England, UK, June.
01523897
Steve Downer / Mayflies (Ephemeroptera) flying above a stream, Moseley Bog, Birmingham, England, UK, June.
Scenic of stream at Moseley Bog, Birmingham, England, UK, June.
01523896
Steve Downer / Scenic of stream at Moseley Bog, Birmingham, England, UK, June.
Mayfly (Chloeon dipterum) Surrey, England, May.
01491005
Kim Taylor / Mayfly (Chloeon dipterum) Surrey, England, May.
Summer mayfly (Siphlonurus lacustris) adult emerging, Europe, May
01531477
Jan Hamrsky / Summer mayfly (Siphlonurus lacustris) adult emerging, Europe, May
Summer mayfly nymph (Siphlonurus lacustris), Europe, May. Controlled conditions.
01531471
Jan Hamrsky / Summer mayfly nymph (Siphlonurus lacustris), Europe, May. Controlled conditions.
Summer mayfly (Siphlonurus lacustris) adult emerging, Europe, May
01531476
Jan Hamrsky / Summer mayfly (Siphlonurus lacustris) adult emerging, Europe, May
Summer mayfly nymph (Siphlonurus lacustris), Europe, May.  Controlled conditions.
01531472
Jan Hamrsky / Summer mayfly nymph (Siphlonurus lacustris), Europe, May. Controlled conditions.
Hacklegill mayfy nymph (Potamanthus luteus), Europe, July.  Controlled conditions.
01531437
Jan Hamrsky / Hacklegill mayfy nymph (Potamanthus luteus), Europe, July. Controlled conditions.
Summer mayfly (Siphlonurus lacustris) adult emerging, Europe, May
01531475
Jan Hamrsky / Summer mayfly (Siphlonurus lacustris) adult emerging, Europe, May
Summer mayfly nymph (Siphlonurus lacustris), Europe, May.  Controlled conditions.
01531473
Jan Hamrsky / Summer mayfly nymph (Siphlonurus lacustris), Europe, May. Controlled conditions.
Giant mayfly (Hexagenia) Adirondack Park, New York, USA, July.
01526358
Doug Wechsler / Giant mayfly (Hexagenia) Adirondack Park, New York, USA, July.
Mayfly (Ephemera danica) on nettle, Surrey, England, UK, May.
01514865
Adrian Davies / Mayfly (Ephemera danica) on nettle, Surrey, England, UK, May.