- Lepidopterological Society of Finland
- Tampere Entomological Society
- The Entomological Club of the Zoological and Botanical Society of Turku
- The Entomological Society of Finland
- Lepidoptera Mundi
The online guide to the World’s Butterflies and Moths. - Moths and Butterflies of Europe and North Africa
- Swedish butterflies
- UK Moths
- Markku Savela's Lepidoptera pages
- Laji.fi foorumi
- Finnish biodiversity info facility
- Swedish Artdatabanken
- Norwegian biodiversity information centre
- Butterfly database
Entomoligical journals:
- Atalanta 1967-1983
- W-album
- Baptria
- Sahlbergia
- Notulae entomologicae
- Entomologica fennica
- Norwegian Journal of Entomology
- Sveriges Entomologisk Tidskrift
- Finnish Museum of natural history
- University of Oulu, Zoological Museum
- Forssa Natural History Museum
- Iisalmi Natural History Museum
- Kuopio Natural History Museum
- Ostrobothian Museum
- Turku Natural History Museum
- Villa Elfvik Espoo
- Tampere museum of natural history
- Kokkola museum of natural history
- Finnish butterflies
- Tero Piirainen's butterfly photos
- Special insect trap of Matti Leskinen
- Butterfly photos of Olli Vesikko
- Juha Tyllinen's butterfly photos
- Harri Puranen's moth pages
- Moth pages of Markku Ruuskanen
- Faunatica
- Lunnikivi
- Butterflies of Harry Nyström
- Butterflies of Mikko Heikkinen
- Insects of Hannu Määttänen
- Photos of Jenni Holopainen
- Photos of Jyrki Virtanen
- UK butterflies
- Bestimmung von Schmetterlingen
- Butterflies and Moths of North America
- Raupen
- Estonia lepidopteroloogide selts
- Guy Padfield's butterfly pages
- Animations
- Schmetterlinge und Raupen rund um Freiburg
- Butterfly alphabet
- The Lepidoptera (butterflies and moths) of Norway
- Buterflies of environment of Poitou-Charentes
- Irish moths
- Matt's European butterflies
- Suffolk Moths
- Butterfly photos of Bernard Fransen
- Butterflies of Poland
- Butterfly video
- Butterfly photos