
Animal Base provides free access to early zoological literature where zoological names were originally established http://www.animalbase.org/
Barcode of Life Data Systems, an online workbench that aids collection, management, analysis, and use of DNA barcodes http://www.boldsystems.org/views/login.php
Biodiversity Heritage Library, a digitisation project of some major natural history libraries, including the Smithsonian's http://www.biodiversitylibrary.org/
Biological Research Collections in Germany http://www.biologie.uni-ulm.de/museum/liste.html
Butterflies & Moths of the World. Generic Names & their Type-species http://www.nhm.ac.uk/entomology/butmoth
Cactus Feeding Moths http://mississippientomologicalmuseum.org.msstate.edu/Researchtaxapages/CactusMoths/Introduction.html
Global Biodiversity Information Facility (GBIF) http://www.gbif.org/
GBIF-Deutschland Entomologie http://www.gbif.de/entomologie
HOSTS - a database of the hostplants of the world's Lepidoptera http://www.nhm.ac.uk/entomology/hostplants
Lepidoptera and some other life forms http://www.funet.fi/pub/sci/bio/life/intro.html
LepIndex – The Global Lepidoptera Names Index http://www.nhm.ac.uk/research-curation/projects/lepindex/
Nomenclator Zoologicus http://www.ubio.org/index.php?pagename=NZ
Nomina Lepidoptera Nearctica http://www.nearctica.com/nomina/lepid/leps.htm
Sherborn's Index Animalium (all species 1758 to 1850) http://www.sil.si.edu/digitalcollections/indexanimalium/
Thomson Index to Organism Names (ION) http://www.organismnames.com/query.htm
Tree of Life Lepidoptera http://tolweb.org/Lepidoptera
Zoobank http://www.zoobank.org/query.htm
Australian Moths Online http://www.ento.csiro.au/anic/moths.html
Insects in France http://aramel.free.fr/
Lepiforum - Identification of Lepidoptera and their preimaginal stages. A comprehensive photo gallery with comments on European Lepidoptera, predominantly Germany, Austria and Switzerland http://www.lepiforum.de/
Guide to the moths of Great Britain and Ireland http://ukmoths.org.uk/
Japanese Moths Photographs http://www.jpmoth.org/
Moths and butterflies of Europe and North Africa, predominantly Mediterranean http://www.leps.it/
Images of New Zealand Lepidoptera type specimens http://www.landcareresearch.co.nz/research/biodiversity/invertebratesprog/lepidoptera/index_single.asp
North American Moth Photographers Group http://mothphotographersgroup.msstate.edu/Plates.shtml
Berlov's colour atlas of Siberian Lepidoptera http://olegberlov.narod.ru/pyr.html
Boris Loboda's photo page on Ukrainian animals and plants http://barry.fotopage.ru/