Amaurobius

Amaurobius is a genus of spiders in the family Amaurobiidae. Amaurobius spiders have been sighted 116 times by contributing members. Based on collected data, the geographic range for Amaurobius includes 2 countries and 15 states in the United States. Amaurobius is most often sighted indoors, and during the month of April.

Taxonomic Hierarchy

Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Araneae
Suborder: Araneomorphae
Family: Amaurobiidae
Genus: Amaurobius

Author

Carl Ludwig Koch, 1837

Sightings Overview

There have been 116 confirmed sightings of Amaurobius, with the most recent sighting submitted on April 26, 2025 by Spider ID member bloodmoonwoods. The detailed statistics below may not utilize the complete dataset of 116 sightings because of certain Amaurobius sightings reporting incomplete data.

Web: 9% of the time, Amaurobius spiders are sighted in a spider web (Sample size: 116)
Sex: 4 female and 67 male.
Environment: Amaurobius has been sighted 29 times outdoors, and 95 times indoors.
Outdoors: Man-made structure (11). Ground layer (8). Under rock or debris (8). Forest (1). Cave (1).

Location and Range

Amaurobius has been sighted in the following countries: Canada, United States.

Amaurobius has also been sighted in the following states: Connecticut, Illinois, Indiana, Maryland, Massachusetts, Michigan, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Virginia, West Virginia, Wisconsin.