Taxonomic Hierarchy
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Arachnida
- Order: Araneae
- Suborder: Araneomorphae
- Family: Theridiidae
- Genus: Steatoda
- Species: Steatoda triangulosa
Other Common Names
Triangulate Cobweb Spider, Triangulate Cobweb Weaver
Author
Charles Athanase Walckenaer, 1802
Primary Colors
Sightings Overview
There have been 235 confirmed sightings of Steatoda triangulosa (Triangulate Cobweb Spider), with the most recent sighting submitted on April 7, 2025 by Spider ID member haronfrehbycon. The detailed statistics below may not utilize the complete dataset of 235 sightings because of certain Steatoda triangulosa sightings reporting incomplete data.
- Web: 33% of the time, Steatoda triangulosa spiders are sighted in a spider web (Sample size: 235)
- Sex: 13 female and 21 male.
- Environment: Steatoda triangulosa has been sighted 32 times outdoors, and 209 times indoors.
- Outdoors: Man-made structure (20). Low foliage (2). High foliage (1). Ground layer (3). Under rock or debris (4). Open field, pasture, grassland (1). Desert area (1).
Location and Range
Steatoda triangulosa (Triangulate Cobweb Spider) has been sighted in the following countries: Austria, Canada, Germany, Italy, Slovakia, Spain, Turkey, United States.
Steatoda triangulosa has also been sighted in the following states: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, Wisconsin.
Seasonality
Steatoda triangulosa has been primarily sighted during the month of April.
- January: 16
- February: 28
- March: 31
- April: 58
- May: 44
- June: 10
- July: 7
- August: 4
- September: 6
- October: 13
- November: 3
- December: 15