AraneaeGnaphosidae – Ground Spiders

Urozelotes rusticus

This record describes Urozelotes rusticus (species). Recorded family: Gnaphosidae. Recorded order: Araneae.

Identification and Appearance

Urozelotes rusticus - Urozelotes rusticus
Contributed by John Sloan; Additional contributions by cheins

Identification notes

Palp

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae (Spiders)
Family
Gnaphosidae (Ground Spiders)
Genus
Urozelotes

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Habitat

Most frequently taken from buildings

Geographic Range

This synanthropic species is not native to North America but could be found wherever people are. Isolated records have been found across the U.S. and Ontario.

Additional species information

Species notes from the sources

Etymology: (L. Koch, 1872)

About Spiders: the wider group

Order-level background for Araneae, the group containing Urozelotes rusticus. Species-specific details appear above.

Group overview

As of 2023, 51,673 spider species in 136 families have been recorded, though an estimated 150,000 species exist. Spiders rank 7th in total species diversity among all organism orders. Only 0.5% of spider species pose any risk to human health.

Ecological role of the group

Spider venom contains complex peptides with diverse pharmacological activities, making them valuable for drug development research. Spiders produce up to 7 types of silk from specialized glands. Spider silk genes have been inserted into mammals and plants for biotech applications.

Economic and practical significance of the group

The global spider community kills an estimated 400-800 million tons of prey annually (2017 study). Spiders provide billions of dollars in natural pest control for agriculture. Spider silk is 5× stronger than steel of the same diameter, driving a biomaterials research industry.

Recorded sources for this group: World Spider Catalog, PNAS, Nature, ScienceDirect. Imported estimates may describe particular regions or reporting periods.

Explore Araneae families and species →

Photos of Urozelotes rusticus (5)

Urozelotes rusticus - photo 1
Contributed by John Sloan; Additional contributions by cheins
Urozelotes rusticus - photo 2
Contributed by John Sloan; Additional contributions by cheins
Urozelotes rusticus - photo 3
Contributed by John Sloan; Additional contributions by cheins
Urozelotes rusticus - photo 4
Contributed by John Sloan; Additional contributions by cheins
Urozelotes rusticus - photo 5
Contributed by John Sloan; Additional contributions by cheins

Photo credits: Contributed by John Sloan; Additional contributions by cheins

Frequently Asked Questions About Urozelotes rusticus

How big is Urozelotes rusticus?
FeatureDetails
Males~6.5 mm
Females~6.7 mm
How do you identify Urozelotes rusticus?

Palp

Where is Urozelotes rusticus found?
FeatureDetails
HabitatMost frequently taken from buildings
RangeThis synanthropic species is not native to North America but could be found wherever people are. Isolated records have been found across the U.S. and Ontario.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by John Sloan; Additional contributions by cheins. Contributors retain copyright over their individual contributions.