Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Previous events


Genus Ariadna

spinnerets, tube-dwelling spider - Ariadna bicolor - female Ariadna bicolor - male Tube Web Spider - Ariadna bicolor Ariadna bicolor Black and brown spider - Ariadna bicolor Black and brown spider - Ariadna bicolor Spider - Ariadna bicolor Ariadna bicolor  - Ariadna bicolor - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Synspermiata)
Family Segestriidae (Tube Web Spiders)
Genus Ariadna
Synonyms and other taxonomic changes
Ariadna fidicina = Citharoceps fidicina
Ariadna pragmatica = A. bicolor
Previously A. bicolor, fidicina, pilifera, perkinsi, pragmatica, and weaveri listed for United States.
Currently A. bicolor, arthuri, perkinsi
Male metatarsus I bent and with lateral process (spur). (1)
A. bicolor - (US range) southwestern US northeast to New England
A. arthuri - (US range) Florida Keys
A. perkinsi - Hawaii
Print References
Beatty, J. (1970). The spider genus Ariadna in the Americas (Araneae, Dysderidae). Bulletin of the Museum of Comparative Zoology at Harvard College 139: 433-518.

Giroti, A. M. & Brescovit, A. D. (2018). The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae). Zootaxa 4400(1): 1-114.
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.