Reference Library of Digitized Insect Sounds
- Audio samples organized by both species and subject.
- http://www.ars.usda.gov/sp2UserFiles/person/3559/soundlibrary.html

What's That Bug?
- Information, user-contributed images, and identification help for insects and relatives of North America.
- http://www.whatsthatbug.com/

Herper.com: Invertebrates
- Articles and links related to insects, arachnids, and other invertebrates.
- http://www.herper.com/invertebrates.html

Phylum Arthropoda
- Philip Myers's introduction to Phylum Arthropoda, from the Animal Diversity Web.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Arthropoda.html

Canadian National Collection of Insects, Arachnids, and Nematodes
- Information on the 16 million specimens contained in the collection, plus curatorial units and staff. Links to on-site entomology and arachnology documentation, and other relevant web sites.
- http://res2.agr.gc.ca/ecorc/cnc/index_e.htm

Bugs in Cyberspace
- Images and information on many species of arthropods. Sections on phasmids, mantids, beetles, scorpions, and US invertebrates.
- http://www.bugsincyberspace.com/

BugGuide.Net
- An online resource devoted to insects, spiders and their kin, with identification help, images, and information.
- http://www.bugguide.net

Identification of Insects
- An overview of morphological features of the different Classes of arthropods and Orders of insects, with photos of Italian arthropods by Alessandro Strano.
- http://strano16.interfree.it/artroph.htm

Arthropoda
- Phylogeny, bibliography, and links from the Tree of Life Project.
- http://www.tolweb.org/tree?group=Arthropoda&contgroup=Bilateria

Insects of Ojibway Prairie, Windsor, Ontario
- Photo galleries and information on spiders, chiggers, mayflies, fireflies, dragonflies, butterflies, moths, leafhoppers and other invertebrates of urban areas, wetlands, prairies, and woodlands.
- http://www.ojibway.ca/insect.htm

Cirrus Digital Imaging
- Gallery of close-up photos of common North American arthropods.
- http://www.cirrusimage.com/

Bug Pictures
- Gallery of photos of insects and spiders, mainly from France.
- http://www.bugpics.com/

Common Insects of Texas
- Gallery of 381 images of insects and other arthropods.
- http://entowww.tamu.edu/images/insects/common/

Introduction to the Cheliceramorpha
- About the arthropod order that includes spiders and scorpions, mites and ticks, horseshoe crabs, and daddy-longlegs. Cheliceramorpha includes spiders and scorpions, mites and ticks, horseshoe crabs, daddy-longlegs, and extinct "sea-scorpions."
- http://www.ucmp.berkeley.edu/arthropoda/chelicerata/cheliceramorpha.html

Insects and More
- Image galleries of butterflies, odonates, other insects, and other arthropods from Texas.
- http://stephenville.tamu.edu/~fmitchel/insects/

TIARA
- Collaborative biological information system for the insects and terrestrial arthropods of the south-central United States and adjacent Mexico. Classification, range maps, taxon lists, images, Texas A and M University holdings, and links.
- http://www.csdl.tamu.edu/tiara/

Iowa State University Entomology Image Gallery
- A large collection of photographs and movies of insects and other arthropods and they damage they cause. Includes links to accompanying articles.
- http://www.ent.iastate.edu/imagegallery/

Introduction to the Arthropoda
- The Arthropods, the largest animal phylum, includes insects, spiders, crustaceans, and others. Comprehensive information from UC-Berkeley website.
- http://www.ucmp.berkeley.edu/arthropoda/arthropoda.html

Natural Perspective
- Phylum Arthropoda (Joint-Legs)
- http://www.perspective.com/nature/animalia/arthropoda.html