- International Society for Arachnology (ISA)
Focuses on the arachnid orders Amblypygi, Araneae, Opiliones, Palpgradi, Pseudoscorpiones, Ricinulei, Schizomida, Scorpiones, and Uropygi, but not Acari.
www.arachnology.org
- American Arachnological Society, The
Founded to promote the study of arachnids and to achieve closer cooperation and understanding between amateur and professional arachnologists.
www.americanarachnology.org
- Arachnodata
Information and coordination agency for arachnid animals in general and scorpions in particular. In German and English.
www.arachnodata.ch
- eNature.com: Insects and Spiders
Nature and wildlife field guide for a variety of insects and arachnids: water bugs, beetles, grasshoppers, ants, dragonflies, bees, ticks, spiders, and more.
www.enature.com/fieldguides/intermediate.asp?curGroupID=4
- Tree of Life: Arachnida
Guide to the natural history of spiders, mites, scorpions, whipscorpions, and pseudoscorpions.
tolweb.org/tree?group=Arachnida&contgroup;=Arthropoda
- Common Names of Arachnids 2003
(PDF)
Publication from the American Arachnology Society.
www.americanarachnology.org/acn5.pdf
- Class Arachnida
Large Class of arthropods includes over 60,000 described species. Spiders make up the majority; closely followed by mites and ticks.
animaldiversity.ummz.umich.edu/site/accounts/pictures/Arachnida.html
- Everything about Arachnids
Presents pictures, information, and characteristics of scorpions, spiders, mites, and ticks.
www.everythingabout.net/articles/biology/animals/arthropods/arachnids
- Journal of Arachnology On-Line
Official journal of the American Arachnological Society.
www.americanarachnology.org/JOA_online.html#general
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