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For the United States & Canada
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Family Trachelidae

Spider - Trachelas Trachelas tranquillus - female Trachelas tranquillus - male Corinnidae - Trachelas tranquillus - male Trachelas? - Trachelas Spider - What family? - Meriola Trachelas tranquillus? - Trachelas tranquillus - female A spider in need of ID. TIA - Trachelas - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes )
Family Trachelidae
Other Common Names
Ground Sac Spiders
Synonyms and other taxonomic changes
Meriola and Trachelas were transferred from Corinnidae to the new family Trachelidae by Ramírez, 2014.(1)
11 species in 2 genera found in North America:
Meriola - 3 species
Trachelas - 8 species
Exact distribution within these countries will be added when time permits.
Print References
The morphology and phylogeny of dionychan spiders
By Ramírez, Martín J.(1)
Internet References
World Spider Catalog (2014). World Spider Catalog. Natural History Museum Bern, online at, version 15.5, accessed on 11/19/2014(2)
Works Cited
1.The morphology and phylogeny of dionychan spiders
Ramírez, Martín J. 2014. Bulletin of the American Museum of Natural History.
2.World Spider Catalog