The Moth Photographers Group: www.mothphotographersgroup.msstate.edu/MainMenu.shtml This is probably the most useful moth website on the internet since it covers all of North America and is based on visual retrieval.
                                      
Noctuidae of North America: www.nearctica.com/moths/noctuid/noctuidae.htm

Gelechiidae: http://mississippientomologicalmuseum.org.msstate.edu/Researchtaxapages/Lepidoptera/Gelechiidaehome.html

Tortricidae: Tortricid.net

Southwest Moths: www.southwestmoths.org

Symbiota Collections of Arthropods Network: https://scan-bugs.org/portal/index.php

BugGuide: www.bugguide.net/node/view/15740

iNaturalist: https://www.inaturalist.org/

Bold Systems: https://v3.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=113

Discover Life Moth Project: http://www.discoverlife.org/moth/identification.html

The Lepidopterists’ Society: http://www.lepsoc.org/index.php

HOSTS Database of Lepidopteran Host Plants: https://www.nhm.ac.uk/our-science/data/hostplants/search/index.dsml

Vascular Plants of the Gila Wilderness: http://www.wnmu.edu/academic/nspages/gilaflora/