Conventions on this site
Body length excludes legs and chelicerae and is reported in millimeters. When sources differ, we report the range covering adult females and males separately when sexual dimorphism is meaningful.
Leg span is the distance between the tips of the front and back legs of the same side when extended, in millimeters.
References
- [1]Spiders of North America: an identification manual - American Arachnological Society. Accessed June 2026.
Related in Reference
- Spider anatomy: a visual glossaryTerminology used throughout this site for describing spider morphology, with the diagnostic features most useful for identification..
- Spider taxonomy: families covered on this siteA working list of the spider families most relevant to human-built environments in North America, with diagnostic notes..
- Common US spider families - quick referenceDiagnostic summary of the ten spider families most often encountered in and around US homes, with the key trait that distinguishes each at first sight..
- Spider bite versus other arthropod bitesMost presumed spider bites are caused by other arthropods or by infection.
- Identification trait glossaryPlain-language definitions of the terms used on species pages: carapace, sternum, epigynum, scopula, calamistrum, cribellum, trichobothria, and more..