Latrodectus
(Widow Spiders)

Latrodectus, commonly known as Widow Spiders, is a genus of spiders in the family Theridiidae. Latrodectus spiders have been sighted 173 times by contributing members. Based on collected data, the geographic range for Latrodectus includes 13 countries and 26 states in the United States. Latrodectus is most often sighted outdoors, and during the month of May.

Taxonomic Hierarchy

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Arachnida
  • Order: Araneae
  • Suborder: Araneomorphae
  • Family: Theridiidae
  • Genus: Latrodectus

Common Name (AASMore information icon)

Widow Spiders

Other Common Names

Cobweb Spiders, Cob Web Spiders, Comb-footed Spiders, Tangle-web Spiders, Gumfoot-web Spiders, Button Spiders (Africa)

Author

Charles Athanase Walckenaer, 1805

Sightings Overview

There have been 173 confirmed sightings of Latrodectus (Widow Spiders), with the most recent sighting submitted on January 19, 2019 by Spider ID member stickit. The detailed statistics below may not utilize the complete dataset of 173 sightings because of certain Latrodectus sightings reporting incomplete data.

  • Web: 38% of the time, Latrodectus spiders are sighted in a spider web (Sample size: 108)
  • Sex: 68 female and 37 male.
  • Environment: Latrodectus has been sighted 78 times outdoors, and 41 times indoors.
  • Outdoors: Man-made structure (48). Low foliage (7). High foliage (6). Ground layer (5). Under rock or debris (7). Forest (2). Desert area (3).

Location and Range

Latrodectus (Widow Spiders) has been sighted in the following countries: Argentina, Australia, Bahrain, Brazil, Canada, Curacao, India, Israel, Mexico, South Africa, Turkey, United Arab Emirates, United States.

Latrodectus has also been sighted in the following states: Alabama, Arizona, Arkansas, California, Colorado, Florida, Georgia, Hawaii, Illinois, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Mississippi, Missouri, New Mexico, None, North Carolina, Oklahoma, Oregon, South Carolina, Tennessee, Texas, Utah, Virginia.

Seasonality

Latrodectus has been primarily sighted during the month of May.

  • January: 11
  • February: 10
  • March: 21
  • April: 15
  • May: 27
  • June: 19
  • July: 14
  • August: 6
  • September: 5
  • October: 19
  • November: 3
  • December: 9

Additional Remarks

  • There are 5 different species of Latrodectus (“widow spiders”) in North America.


Latrodectus Species


Featured Pictures

Picture of Latrodectus spp. (Widow Spiders) - Lateral,Accidental adventive Enlarge Picture
1
Picture of Latrodectus spp. (Widow Spiders) - Dorsal Enlarge Picture
2
Picture of Latrodectus spp. (Widow Spiders) - Male Enlarge Picture
3
Picture of Latrodectus spp. (Widow Spiders) - Female - Dorsal Enlarge Picture
4
Picture of Latrodectus spp. (Widow Spiders) - Female - Ventral Enlarge Picture
5
Picture of Latrodectus spp. (Widow Spiders) - Dorsal Enlarge Picture
6
Picture of Latrodectus spp. (Widow Spiders) - Ventral,Webs Enlarge Picture
7
Picture of Latrodectus spp. (Widow Spiders) - Dorsal Enlarge Picture
8
View All Pictures