- Europe
- Guy Padfield's European Butterfly Page
- European Butterflies: a portrait in photographs (Bernard Watts)
- Moths and Butterflies of Europe and North Africa (Paolo Mazzei et al.)
- Photography of European Butterflies and Moths - Bernard Fransen
- Diginature (Johannes van Donge)
- Captain's European Butterfly Guide (Simon Combes)
- Butterflies (Morten Molgaard)
- euroleps (Heiner Ziegler)
- Lepiforum (in German)
- European Butterflies and Moths (Chris Jonko)
- Anything but common (Peter Groenendijk)
- pyrgus.de
- Europe - organisations
- European Interests Group (EIG) - Butterfly Conservation
- European Interests Group (EIG) - European species list
- Butterfly Conservation Europe
- Bern convention - see Annexe 2
- Mapping European Butterflies
- Switzerland
- Swiss Distribution Maps
- Papillons de Suisse
- Weather in Switzerland
- Butterflies and moths of Switzerland (Heiner Zeigler)
- France
- Butterflies of the Auvergne
- Diatheo - bibliography of French butterflies (Tristan Lafranchis)
- The Butterflies of the Monts du Lyonnais, France (Tim Cowles)
- Butterflies of France (Roger Gibbons)
- Fleeting Wonders - Butterflies and Burnets of France (Philippe Bricaire)
- Oreina - quarterly publication on French lepidoptera
- Les Carnets du Lépidoptériste Français
- Filming VarWild: Homepage (Pieter + Brigitte Kan)
- Jardin des papillons
- Les Lépidopterists de France
- UK
- British Butterflies - Peter Eeles
- UK Moths
- Amateur Entomologists Society (UK)
- Butterfly Conservation
- Moths Count - UK recording scheme and maps
- Huntingdonshire Moth and Butterfly Group
- Amateur Entomologists Society
- Benelux (Belgium, Netherlands, Luxemburg)
- Flemish Entomological Society - Phegea
- Butterflies in the Benelux
- Butterflies of Holland - Henk Dikkema
- Vlindernet - Dutch Lepidoptera
- Dutch Butterfly Conservation
- Finland
- Finish butterflies
- Greece
- Butterflies of Greece - Lazaros Pamperis - book app, identification tips (see 'wings A, B + C')
- Butterflies of Greece
- Serbia
- Butterflies of Serbia - Milan Djuric GO ON ONE OF HIS GUIDED TOURS! HIGHLY RECOMMENDED!
- Commercial
- Charaxes Publications (Jason Sargerson)