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Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12


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TaxonomyBrowse
Info
ImagesLinksBooksData

Class Arachnida - Arachnids

Black and Yellow Argiope - Argiope aurantia - female Harvestman - Leiobunum Pseudoscorpion Hubbardiidae - Hubbardia pentapeltis Windscorpion - Eremocosta Scorpion - Uroctonites montereus Ixodes scapularis Say - Ixodes scapularis - female Erythraeidae - Callidosoma
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Numbers
Worldwide: (1)
12 orders
450 families
75,500 species

Orders:
Amblypygi - Tailless Whipscorpions
Araneae - Spiders
Uropygi - Whipscorpions
Opiliones - Harvestmen
Palpigradi - Microscorpions
Pseudoscorpiones - Pseudoscorpions
Ricinulei - Hooded Tickspiders
Schizomida - Short-tailed Whipscorpions
Scorpiones - Scorpions
Solifugae - Windscorpions
Subclass Acari - Mites and Ticks
-Superorder Parasitiformes
Ixodida - Ticks
-Superorder Acariformes
Identification
One or two body parts
Four pairs of legs (usually - although immature ticks, for example, can have three pairs of legs)
No antennae
Internet References
Common Names of Arachnids 2003 Fifth Edition - The American Arachnological Society; Committee on Common Names of Arachnids
Works Cited
1.Animal: The Definitive Visual Guide to the World's Wildlife
Don E. Wilson, David Burnie. 2001. Dorling Kindersley Publishing.