Here are 2018's earliest sightings of resident and common migrant butterflies, as reported to Butterfly Conservation.

Silver-spotted Skipper and Scotch Argus are now on the wing, meaning that all UK resident butterflies have now emerged in 2018.

To count as first sightings, butterflies must be seen outside and be active (i.e. not in hibernation). If you are confident that you've seen a butterfly species in the UK this year that has not yet been reported below, please contact info@butterfly-conservation.org. You can follow all the latest sightings, as they happen, on Twitter @RichardFoxBC or on Butterfly Conservation's Facebook page.

Last update: 26 July 2018

Vernacular name Scientific name Date Location
Swallowtail  Papilio machaon 15 May  Norfolk
Dingy Skipper Erynnis tages 19 April  Surrey
Grizzled Skipper Pyrgus malvae 14 April  Sussex
Chequered Skipper Carterocephalus palaemon 16 May  Highland
Essex Skipper Thymelicus lineola 13 June  Derbyshire
Small Skipper  Thymelicus sylvestris 29 May  Derbyshire
Lulworth Skipper  Thymelicus acteon 18 May  Dorset
Silver-spotted Skipper  Hesperia comma 9 July Oxfordshire
Large Skipper  Ochlodes sylvanus 11 May  Derbyshire
Wood White  Leptidea sinapis 6 May  Sussex
Cryptic Wood White  Leptidea juvernica 6 May  Co. Fermanagh
Orange-tip  Anthocharis cardamines 5 April  Somerset
Large White  Pieris brassicae 5 April  Derbyshire
Small White  Pieris rapae 6 March  Kent
Green-veined White  Pieris napi 21 March Suffolk
Clouded Yellow Colias croceus 7 April  Devon
Brimstone Gonepteryx rhamni  5 Jan Hampshire
Wall  Lasiommata megera 19 April  Tyne & Wear
Speckled Wood  Pararge aegeria 25 Jan  London
Large Heath  Coenonympha tullia 30 May  Cumbria
Small Heath  Coenonympha pamphilus 25 April  Sussex
Mountain Ringlet Erebia epiphron 26 May  Cumbria
Scotch Argus Erebia aethiops 12 July Cumbria
Ringlet Aphantopus hyperantus 1 June  Derbyshire
Meadow Brown Maniola jurtina 12 May  Norfolk
Gatekeeper Pyronia tithonus 11 June  Devon
Marbled White Melanargia galathea 3 June  Berkshire
Grayling Hipparchia semele 8 June  Conwy
Pearl-bordered Fritillary Boloria euphrosyne 29 April  Cornwall
Small Pearl-bordered Fritillary Boloria selene 10 May  Cornwall
Silver-washed Fritillary Argynnis paphia 10 June  Hertfordshire
Dark Green Fritillary Argynnis aglaja 31 May Devon
High Brown Fritillary Argynnis adippe 13 June  Glamorgan
White Admiral Limenitis camilla 6 June  Dorset
Purple Emperor Apatura iris 13 June  Cambridgeshire
Red Admiral Vanessa atalanta 1 Jan Devon & Oxfordshire
Painted Lady Vanessa cardui 6 March  Sussex
Peacock Aglais io 1 Jan Norfolk
Small Tortoiseshell Aglais urticae 10 Jan Northants, Sussex &  Wilts
Comma Polygonia c-album 10 Jan  Sussex
Marsh Fritillary Euphydryas aurinia 13 May  Wiltshire
Glanville Fritillary Melitaea cinxia 9 May  Isle of Wight
Heath Fritillary Melitaea athalia 19 May  Essex
Duke of Burgundy  Hamearis lucina 26 April  Hampshire
Small Copper  Lycaena phlaeas 14 March  Sussex
Brown Hairstreak Thecla betulae 5 July Pembrokeshire
Purple Hairstreak Favonius quercus 10 June  Essex
Green Hairstreak Callophrys rubi 18 April  Gloucestershire, Surrey & Sussex
White-letter Hairstreak Satyrium w-album 31 May  Middlesex
Black Hairstreak Satyrium pruni 1 June  Oxfordshire
Small Blue  Cupido minimus 5 May Pembrokeshire
Holly Blue  Celastrina argiolus 25 March  Derbyshire
Large Blue  Maculinea arion 21 May  Somerset
Silver-studded Blue  Plebejus argus 29 May  Hampshire
Brown Argus  Aricia agestis 6 May  Cornwall & Sussex
Northern Brown Argus  Aricia artaxerxes 30 May  Cumbria
Common Blue  Polyommatus icarus 6 May  Sussex
Adonis Blue  Polyommatus bellargus 8 May  Kent
Chalk Hill Blue  Polyommatus coridon 25 June  Cambridgeshire