Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Family Amaurobiidae - Hacklemesh Weavers

Spider - Amaurobius ferox Little Brown House Spider ??? - Amaurobius ferox spider Cybaeopsis wabritaska - male Adult female - Callobius severus - female Is this Callobius? - Callobius Callobius? - Callobius - female Spider ID in Pittsburgh 02/19 - Amaurobius ferox
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Amaurobiidae (Hacklemesh Weavers)
There are 97 species in 10 genera in North America. (1)
1.3-20.0 mm.
This family is distributed across the United States and Canada, but the highest species diversity is found from California north to British Columbia.
"Most amaurobiids occur in cryptozoic habitats on the forest floor, in and under decomposing logs, in leaf litter, and under rocks. Some... are found in the bark cavities of standing trees and others have been recorded from rocky grasslands, buildings and caves". (1)
The placement of some images to genus and species in this family may be questionable as many are similar and hard to distinguish from photos alone.
Print References
A revision of the Nearctic Amaurobiidae (Arachnida: Araneidae) (2)
Works Cited
1.Spiders of North America: An Identification Manual
D. Ubick, P. Paquin, P.E. Cushing and V. Roth (eds). 2005. American Arachnological Society.
2.A revision of the Nearctic Amaurobiidae (Arachnida: Araneidae)
Robin Leech. 1972. Memoirs of the Entomological Society of Canada 84: 1-82.