Internet sources

Fauna Europaea - All European animal species online
https://fauna-eu.org
Taxonomic data and distribution in Europe
http://www.koleopterologie.de/Photo database of beetles and bugs
https://www.kerbtier.de/Web site about beetles in Germany by Christoph Benisch well-suited for fast search
https://www.diptera.info/photogallery.phpConsiderable image database of true flies and midges
http://www.cthirion.eu/Photo gallery Ichneumonids by Camille Thirion
http://lepiforum.org/wiki/Guide to butterflies and moths with image database containing all live cicle stages
https://ukmoths.org.uk/Guide to the moths of Great Britain and Ireland
https://wiki.arages.de/Wiki about central european arachnids
https://www.pflanzengallen.de/Photo database of plant galls by Hans J├╝rgen Buhr
https://www.britishbugs.org.uk/An online identification guide to UK hemiptera
http://www.insektenbox.de/index.htmlPhotos and information about mode of live of central european insects
https://bugguide.net/Identification, images, & information for insects, spiders & their kin for the United States & Canada
National Barkfly Recording Scheme (Britain and Ireland)
https://www.brc.ac.uk/schemes/barkfly/gallery.aspx
Psocoptera
http://www.blumeninschwaben.de/Flora of Germany
https://www.wikipedia.org/Wikipedia, the free encyclopedia
https://www.catalogueoflife.org/Catalogue of Life, checklist of species, accepted scientific names and synomyms