AraneaeAmaurobiidae – Hacklemesh Weavers

Callobius nomeus

This record describes Callobius nomeus (species). Recorded family: Amaurobiidae. Recorded order: Araneae.

Identification and Appearance

Callobius nomeus - Callobius nomeus
(c) Thomas Barbin, some rights reserved (CC BY-NC), uploaded by Thomas Barbin

Callobius nomeus is a species of hacklemesh weaver in the spider family Amaurobiidae. It is found in the United States and Canada. Specifically this species is associated with tree bark.

Identification notes

Epigynum

Wikipedia reference for Callobius nomeus: https://en.wikipedia.org/wiki/Callobius nomeus.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae (Spiders)
Family
Amaurobiidae (Hacklemesh Weavers)
Genus
Callobius

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

Habitat and Range

Geographic Range

Newfoundland west across Canada to British Columbia and south in the mountains of the west to Oregon and New Mexico.

Additional species information

Species notes from the sources

Etymology: Author: Chamberlin, 1919

About Spiders: the wider group

Order-level background for Araneae, the group containing Callobius nomeus. 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 Callobius nomeus (2)

Callobius nomeus - photo 1
(c) Thomas Barbin, some rights reserved (CC BY-NC), uploaded by Thomas Barbin | (c) Rod Crawford, some rights reserved (CC BY-NC), uploaded by Rod Crawford | Contributed by Charley Eiseman; Additional contributions by Lynette Elliott , cheins , jsloan
Callobius nomeus - photo 2
(c) Thomas Barbin, some rights reserved (CC BY-NC), uploaded by Thomas Barbin | (c) Rod Crawford, some rights reserved (CC BY-NC), uploaded by Rod Crawford | Contributed by Charley Eiseman; Additional contributions by Lynette Elliott , cheins , jsloan

Photo credits: (c) Thomas Barbin, some rights reserved (CC BY-NC), uploaded by Thomas Barbin | (c) Rod Crawford, some rights reserved (CC BY-NC), uploaded by Rod Crawford | Contributed by Charley Eiseman; Additional contributions by Lynette Elliott , cheins , jsloan

Frequently Asked Questions About Callobius nomeus

What is Callobius nomeus?

Callobius nomeus is a species in the family Amaurobiidae, within the order Araneae.

How big is Callobius nomeus?

Female body length = 11mm Male body length = 8mm

How do you identify Callobius nomeus?

Epigynum

Where is Callobius nomeus found?

Range: Newfoundland west across Canada to British Columbia and south in the mountains of the west to Oregon and New Mexico.

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

Photo credits: (c) Thomas Barbin, some rights reserved (CC BY-NC), uploaded by Thomas Barbin | (c) Rod Crawford, some rights reserved (CC BY-NC), uploaded by Rod Crawford | Contributed by Charley Eiseman; Additional contributions by Lynette Elliott , cheins , jsloan. Contributors retain copyright over their individual contributions.