An alphabetised list of the world's butterflies grouped into 'area'.
Britain/Europe 
Adonis Blue
American Painted Lady
Bath White
Berger’s Clouded Yellow
Black Hairstreak
Black-veined White
Brimstone
Brown Argus
Brown Hairstreak
Camberwell Beauty
Chalkhill Blue
Chequered Skipper
Clouded Yellow
Comma
Common Blue
Dark Green Fritillary
Dingy Skipper
Duke of Burgundy
Essex Skipper
Gatekeeper
Geranium Bronze
Glanville Fritillary
Grayling
Green Hairstreak
Green-veined White
Grizzled Skipper
Heath Fritillary
High Brown Fritillary
Holly Blue
Large Blue
Large Chequered Skipper
Large Copper British Race
Large Heath
Large Skipper
Large Tortoiseshell
Large White
Long-tailed Blue
Lulworth Skipper
Map
Marbled White
Marsh Fritillary
Mazarine Blue
Meadow Brown
Monarch
Mountain Ringlet
Northern Brown Argus
Orange Tip
Painted Lady
Pale Clouded Yellow
Peacock
Pearl-bordered Fritillary
Purple Emperor
Purple Hairstreak
Queen of Spain Fritillary
Real’s Wood White
Red Admiral
Ringlet
Scarce Swallowtail
Scotch Argus
Short-tailed Blue
Silver-spotted Skipper
Silver-studded Blue
Silver-washed Fritillary
Small Blue
Small Copper
Small Heath
Small Pearl-bordered Fritillary
Small Skipper
Small Tortoiseshell
Small White
Speckled Wood
Swallowtail British Race
Swallowtail European Race
Wall Brown
White Admiral
White-letter Hairstreak
Wood White
S America/Amazon/Andes
“88” Butterfly
“89” Butterfly
8-spot Short-tailed Skipper
Acidalia Leafwing
Acontius firewing
Acraea Mimic
Acraeid Mimic Satyr
Aegina Beauty
Agatha Blue Ringlet
Agathina Emperor
Agnosia Glasswing
Alala Sister
Alectryo Patch
Amazon Cracker
Amazonicus Beauty
Amber Phantom
Amphiro Redring
Andean Buckeye
Andean Painted Lady
Angle-winged Telesiphe
Angusta Crescent
Antisao Glasswing
Apulia Mountain Satyr
Arene Sailor
Aristotle’s Skipper
Athalina Glasswing
Ayaya Ringlet
Azeca Banner
Banded Demon
Banded Euselasia
Banded White Ringlet
Bates Olivewing
BD Butterfly
Beautiful Glasswing
Beautiful Mylon
Beotus Beauty
Black Devil
Blind Underleaf
Blue Doctor
Blue Duskywing
Blue False Flasher
Blue Perisama
Blue-rayed Metalmark
Blushing Phantom
Bolivian Perisama
Brazilian Painted Lady
Butler’s Perisama
Cantobrica Tiger
Capucinus Sister
Carmine Falcon
Cassiae Owlet
Catasticta Mimic
Cattleheart Mimic
Chaonitis Metalmark
Cherry-spotted Adelotypa
Cherubina Emperor
Chiron Daggerwing
Chromis Firewing
Claudina
Cleonus Metalmark
Coelestis Blue Ringlet
Common Banded Skipper
Common Longwing
Common Morpho
Common Mylon
Common Nymphidium
Common Oressinoma
Common Swordtail
Confused Owlet
Corcyra Wanderer
Cosinga Hawker
Crassus Swallowtail
Cream-banded Nymph
Crethon Daggerwing
Croesus Eyemark
Cupavia Skipper
Cyan Leafwing
Cyan-banded Perisama
Cyane Emperor
d’Almeida’s Glasswing
Dainty Egg White
Dead-leaf Wood Nymph
Dido Longwing
Dimorphic Skipper
Diotima Jewel
Dismal Satyr
Dolicaon Swordtail
Dotted Glory
Dull Brown Job
Dyson’s Blue Doctor
Eanes Longwing
Edessa Glasswing
Edocla Redring
Egina Daggerwing
Elissa Page
Ellara Glasswing
Enyo Falcon
Epimachia Glory
Erota Metalmark
Erotia Sister
Esthema Metalmark
Eunomia Numberwing
Euphonious Hairstreak
Falcate Dismorphia
False Altinote
False Daggerwing
Feronia Cracker
Fiery Satyr
Fiery Skipper
Flambeau Daggerwing
Flambeau/Julia
Flamingo Leafwing
Formosus Jewelmark
Galaxy Satyr
Gaudy Altinote
Gaudy Sister
Giant Glasswing
Gisella Sailor
Glassy-winged Skipper
Glauce Leafwing
Glittering Mantle
Glittering Sapphire
Glorious Purplewing
Glycera Glasswing
Golden Lady Slipper
Golden Mountain Satyr
Golden-banded Gem
Golden-veined Glasswing
Goldspot Skipper
Great Orange Tip
Great Tiger-mimic
Green Mantle
Green-shouldered Scallopwing
Gyas Jewelmark
Harmonia Mantle
Harmonia Ringlet
Harmonia Tiger
Helios Blue Ringlet
Hemon Blue Hairstreak
Hewitson’s Mimic
Hewitson’s Sabre-wing
Hewitson’s Tiger
Hopffer’s Skipper
Illinissa Glasswing
Iphiclus Sister
Jordan’s Altinote
Jordan’s Sister
Julia/Flambeau
Juliette Longwing
Keferstein’s Admiral
King Page Swallowtail
Lavinia Blue Glasswing
Lavinia Emperor
Lenea Clearwing
Leopard-spotted Beauty
Leprieur’s Glory
Lesbia Clouded Yellow
Linda’s Emperor
Little Banner
Lobelia Blue Ringlet
Loruhama Eyemark
Lucius Metalmark
Ludo Skipper
Lybia Longwing
Lycimnia White Flag
Lysippus Metalmark
Mabille’s Puna Skipper
Malachite
Malvina Purplewing
Manu Oressinoma
Manu Spreadwing
Marbled Duskywing
Marbled Spurwing
Marchall’s Andean White
Marica Blue Ringlet
Mercurial Skipper
Mermeria Wood Nymph
Mesentina Sister
Messana Sister
Molochina Underleaf
Monachella Satyr
Moneta Longwing
Mosaic
Moschler’s Ruby-eye
Mottled Grass Yellow
Mottled Satyr
Nabokov’s Lycid
Narrow-lined Beauty
Neotropical Chequered Skipper
Norica Daggerwing
Ocellated Owlet
Oenomais Leafwing
Offa Leafwing
Oileus Owl Butterfly
Olynthia Sister
Onega Glasswing
Orange Admiral
Orange-banded Metalmark
Orange-bordered Sooty
Orange-necked Blue Xenandra
Orcynia Hairstreak
Orestessa Metalmark
Ornate Junea
Ortygia Glasswing
Padilla Glasswing
Painted Beauty
Pale Sulphur
Pallid Mountain Satyr
Pallid Mylon
Pamela
Pantiacolla Blue Ringlet
Paradise Phantom
Parallel-banded Euselasia
Peach Beauty
Peppered Blue Skipper
Peruvian Banner
Peruvian Crescent
Peruvian Puna Skipper
Phidias Firetip
Pied Piper
Pigmalion Paradise Skipper
Pink-banded Sister
Pisonis Mimic
Plain Long-tailed Skipper
Postman
Powdered Grey Spurwing
Puna Chequered Blue
Puna Clouded Yellow
Puna Silverwing
Puzzle-mark Skipper
Queen Flasher
Quintina Glasswing
Red Cracker
Red Demon
Red Flasher
Red-banded Altinote
Red-barred Amarynthis
Redline Doctor
Regal Metalmark
Remo Tufted Skipper
Röber’s Perisama
Rosy Euselasia
Rothschild’s Swordtail
Royal Perisama
Ruby-collared Sapphire
Ruddy Leafwing
Rusty Crescent
Rusty Mountain Satyr
Rusty-tipped Page
Salambria Firewing
Sandbar Purplewing
Sapphire Skipper
Sara Longwing
Scarlet Leafwing
Scarlet-tipped Loner
Selina Tiger-stripe
Sergius Firetip
Sesostris Cattle-heart
Silky Wanderer
Simaethis Green Hairstreak
Social Skipper
Spangled Golden Emesis
Staring-eye Spreadwing
Starry Night Cracker
Starry Night Metalmark
Stichel’s Metalmark
Stinky Leafwing
Striped Falcon
Sunburst Glory
Sunburst Satyr
Sunset Daggerwing
Sylphina Angel
Sylvia Wood Nymph
Tailed Owlet
Telassina Firetip
The Doris
The Waiter
Theramenes Bent-Skipper
Thesprotia Sister
Thessalia Sister
Ticida Glasswing
Tiger Mimic Longwing
Tiger with Tails
Tomato
Torquatus Swallowtail
Tres Cruces Skipper
Turquoise Perisama
Turquoise-banded Shoemaker
Valentina Ringlet
Variable Emesis
Variable Leafwing
Variegated Batwing
Violaceus Bent-Skipper
Violet Spreadwing
Virgilia Wood Nymph
Wallace’s Longwing
Weymer’s Bark
White Grass Yellow
White Peacock
White-banded Pallid Ringlet
White-barred Lady Slipper
White-dusted Mountain Satyr
White-spot Falcon
Xantochlora Grass Yellow
Zavaleta Glasswing
Zebra Lycid
Zebra Sapseeker
Zerlina Glasswing
Zorea Eyemark
Malasia/Borneo
Autumn Leaf
Branded Imperial
Club Beak
Club Silverline
Common Awl
Common Bluebottle
Common Caerulean
Common Tiger
Common Tree Nymph
Fluffy Tit
Fruhstorfer’s Silverline
Godart’s Jungle Glory
Green Dragontail
Horsfield’s darkie
Malay Red Harlequin
Purple Sapphire
Rajah Brooke’s Birdwing
Wavy-line Glory
West Africa
Common Dotted Border
Common Forester
Common Orange Charaxes
Common Silver spot
Green Charaxes
Turquoise-spotted Swordtail
Learn About Butterflies is a great resource.
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