Resources:
Theridiidae  Sundevall, 1833 / Latrodectus  Walckenaer, 1805   10 species

Latrodectus mactans (Fabricius, 1775)

Description
Distribution
  Presence
  Not established
  No data
Global distribution (WSC 2026): Probably native to North America only. Introduced to South America, Asia
Figures
Distribution List

"No references" does not mean that the species does not occur in this country, but that we have not yet inserted the reference for it. We are working on it.

Belgium   (Bosmans & Van Keer, 2017) ||| Finland  Removed (Zamani & Koponen, 2025) ||| Germany   (Jäger, 2009) ||| Ireland   (Collier et al., 2023) ||| United Kingdom   (Sherwood, 2025) |||
References

Bosmans R, Van Keer K (2017) Een herziene soortenlijst van de Belgische spinnen (Araneae). Nieuwsbrief van de Belgische Arachnologische Vereniging 32: 39-69 pdf

Collier B L, Dugon M M, Nolan M, Fort A, Healy K, Vitkauskaite A, Lyons K, Munnelly E J, McSharry L, Dunbar, J P (2023) A history of accidental widow spider (genus Latrodectus) introductions on the island of Ireland with a new Irish record for Latrodectus hesperus (Chamberlin and Ivie, 1935), and additional records of Latrodectus geometricus (C.L. Koch, 1841). Proceedings of the Royal Irish Academy Biology and Environment 123B: 111-120 pdf

Jäger P (2009) Latrodectus mactans nach Deutschland eingeschleppt (Araneae: Theridiidae). Arachnologische Mitteilungen 37: 35-38 pdf

Levi H W (1967) Cosmopolitan and pantropical species of theridiid spiders (Araneae: Theridiidae). Pacific Insects 9: 175-186 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

Zamani A, Koponen S (2025) First Nordic record of Pandava laminata (Araneae: Titanoecidae), with a synopsis of anthropochorous species of spiders in Finland. Arachnologische Mitteilungen 69: 5-9 pdf

Updates
30-05-2025 Distribution insert Detail
02-05-2025 Distribution insert Detail
02-05-2025 Image insert
20-02-2025 Distribution insert Detail
03-01-2024 Distribution insert Detail
10-06-2023 Image insert
10-06-2023 Distribution insert Detail