Range overlap and identification
Where ranges overlap, species-level identification of US widows often requires examination of female epigynum or hourglass coloration pattern; danger profile is comparable across native species.
References
- [1]Latrodectus systematics and distribution - Journal of Arachnology. Accessed June 2026.
Related in Data
- Spider bite statistics (United States)Aggregated public-health data on verified spider bites in the United States, drawn from the American Association of Poison Control Centers National Poison Data System (NPDS)..
- Spider species richness by stateDocumented species counts per US state aggregate from state extension publications and museum records.
- Medically significant spiders in the USOnly two genera in the United States produce envenomation of significant clinical consequence: Latrodectus (widows) and Loxosceles (recluses)..
- Verified Loxosceles range (United States)Established populations of native Loxosceles species in the United States, based on museum specimens and verified field collections compiled by Vetter and collaborators..
- Seasonality of indoor spider encountersIndoor sightings of large synanthropic spiders peak in late summer and early autumn in most US regions, driven primarily by male search activity rather than population growth..
- Poison control call trends (United States)AAPCC NPDS data show a steady ~3,500–4,500 annual calls coded for spider exposure across the past decade, with the majority classified as minor and fatalities essentially absent in recent reporting years..