Functions:   Add to compare list  Show compare list  Edit content
Links:
Resources:
Theridiidae  Sundevall, 1833 / Latrodectus  Walckenaer, 1805   10 species

Latrodectus variolus Walckenaer, 1837

WSC LSID urn:lsid:nmbe.ch:spidersp:007828

Key to genera | Key to species

Description
Distribution
  Presence
  Not established
  No data
Global distribution (WSC 2026): Canada, USA
Figures
species

male Pedipalp, ventral view
(Kaston 1970)

species

male Pedipalp, retrolateral view
(Kaston 1970)

species

male Pedipalp, ventral view
(McCrone & Levi 1864)

species

male Pedipalp, ventral view
(McCrone & Levi 1864)

species

male Pedipalp, prolateral view
(McCrone & Levi 1864)

species

male Pedipalp, prolateral view
(McCrone & Levi 1864)

species

male Pedipalp, retrolateral view
(McCrone & Levi 1864)

species

male Pedipalp, retrolateral view
(McCrone & Levi 1864)

species

female Epigyne
(Sherwood 2025)

species

female Vulva, dorsal view
(Sherwood 2025)

species

female Vulva, dorsal view
(Kaston 1970)

species

female Vulva, dorsal view
(McCrone & Levi 1864)

Distribution List
United Kingdom   (Sherwood, 2025) |||
References

Kaston B J (1970) Comparative biology of American black widow spiders. Transactions of the San Diego Society of Natural History 16: 33-82 pdf

McCrone J D, Levi H W (1864) North American widow spiders of the Latrodectus curacaviensis group (Araneae: Theridiidae). Psyche, Cambridge 71: 12-27 pdf

Sherwood D (2025) Annotated checklist of imported non-native spider (Araneae) taxa recorded in the United Kingdom 1800–2024. Arthropoda Selecta 34: 121-160 pdf

WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (13.2.2026) doi: 10.24436/2 pdf

Updates
07-05-2025 Image insert
02-05-2025 Distribution insert Detail
02-05-2025 Image insert