- Spiders.US An International Spider Community with a North American Focus. Spiders.us serves as a community as well as an informational and pictorial library providing accurate spider identification resources to the public. Our goal is to dispel myths, superstitions, and urban legends that cause many people to be fearful of spiders. We empathize and promise to put the squeamish and scared at ease as best we can. We will also defend spiders for the important roles they play in nature, natural pest control, medicine, engineering and other economic and cultural realms.
- Spider Myths Fallacies to Just Plain Weird Stories
- Spider Conservation in the USA. By Kevin L. Skerl
- Bug Guide.Net Chelicerate page
Sites based on Geographic Location
- Spiders of the Arid Southwest. Site at New Mexico State University edited by David Richman, Allen Dean, Sandra Brantley and Bruce Cutler. The arid Southwest can be defined as being composed of the states of Arizona and New Mexico, and part of the states of California and Texas and possibly Utah and Nevada. The northern parts of the Mexican states of Baja California Norte, Sonora, and Chihuahua could also be included in this region. The current work is, however, centered on the Arizona-New Mexico-Trans-Pecos Texas part of the arid Southwest, although it should be useful in the other mentioned areas.
- Texas Spiders. This catalog is an update of a 1970 list put together Bea Vogel. Texas is a transition zone which includes extreme limits of many species and also has part of its border adjoining Mexico. The climate varies from subtropical in South Texas to temperate conditions in the panhandle and from desert in the west to swamp in the east.
- Araneomorphae of Mexico. These WebPages are intended to allow comparisons with other faunistic inventories; in particular, for morphospecies either new or difficult to identify because of the lack of taxonomic revisions. These images are also intended to expedite the identification process for difficult taxa by sharing them with other Arachnologists and to collaborate in species descriptions
- California Jumping Spiders. Great photos and information on the evolution of the genus Habronattus
- Conspicuous Spiders of Orange County. A pictoral guide to the common and conspicuous spiders of Orange County CA, a work in progress by Lenny Vincent
- More Spiders of Orange County by Peter Bryant
- Spiders of California checklist
- The Colorado Spider Survey. Information on the Colorado Spider Survey and a searchable database of Rocky Mountain spiders
- The Spiders of Kentucky. Common Kentucky spiders
- A Guide to Missouri Spiders. Nice photos and descriptions of some of the spiders found in Missouri and adjacent states. Also general information on spiders. Maintained by the Conservation Commission of Missouri
- Spiders of Southeast Asia. High quality macrophotography by Nicky Bay in Singapore
- South India Spiders. A visually pleasing and very informative website dealing with spiders in general and specifically those found in southern India. Brought to all of the world by the Division of Arachnology in the Zoology Department at Sacred Heart College in Cochin, Kerala, India.
- Spiders of Northwest Europe
- The Spiders of Europe and Greenland by Jorgen Lissner
- Spiders of Europe
- Arachnids of Germany
- Biology Catalog from Joel Hallan, The spider distribution data is now at 175,000 distribution records. I recently added the capability of state level maps for all countries. The only countires I have state level data for are China, Australia, U.S. I am currently working on spider synonomy."
Sites on Taxonomy and Taxa
- Arthropoda Cytogenetics. The cytogenetic analysis that has been accomplished in different groups of Arthropoda has the aim of understanding the mechanisms related to the chromosomal evolution, the events responsible for intraspecific and interspecific variability in diploid number, the origin and differentiation of the sex chromosome systems. The mitotic and meiotic chromosomes have been investigated using classical, molecular and ultrastructural methodologies.
- The World Spider Catalog, maintained by the Natural History Museum Bern, Switzerland. First fully searchable online database covering spider taxonomy. After important first paper versions from Bonnet, Roewer, Brignoli and Platnick, this open access database includes all taxonomically useful information for all described spider species. Moreover, the World Spider Catalog Association provides free access to these references for its members.
- Common Names of Arachnids. A concordance of scientific and common names; download as pdf.
- Spiders and Arachnids. UC Riverside website
- Tree of Life -- Arachnida
- The Scorpion Files. Jan Ove Rein's excellent site contains information about and pictures of scorpions; also literature citations, and weblinks.
- Kari's Scorpion Pages. A personal site maintained by Kari J. McWest. Although different from the sites above in that it contains lots of personal information probably not of arachnological interest, the site does contain a series of links to other websites that feature annotated checklists to the scorpions of the United States.
- Salticidae.pl by Jerzy Proszynski
- Jumping Spiders of the World Heiko Metzner's world-wide database of salticids
- Identified Linyphiid Epigynes a collection by Nina Sandlin
- AracnoLab a collection of Opiliones by Adriano Kury
- Orb-web Construction Gallery by Samuel Zschokke
Arachnological Societies and Meetings