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

Calendar
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


TaxonomyBrowse
Info
ImagesLinksBooksData

Genus Coras

Amaurobiid_male_back - Coras - male Coras sp.? (Amaurobiidae) - Coras - male spider - Coras lamellosus - male Spider - Coras Coras lamellosus - male spider - Coras - male Coras sp. medicinalis or lamellosus? - Coras - female Coras? - Coras
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Agelenidae (Funnel Weavers)
Subfamily Coelotinae
Genus Coras
Synonyms and other taxonomic changes
Although these spiders have been placed in a cribellate family, they do not have a cribellum. See discussion here on page 25 (23). Coelotes, Coras, and Wadotes are ecribellate amaurobiids (from link).
Explanation of Names
From Vergil's Aeneid, one of the Argive twins.(1)
Numbers
14 species in the USA and Canada.
Identification
Howell and Jenkins state that "C medicinalis builds an extensive, broad, platform-like web that is equipped with a tubular or funnel retreat. Their webs are often constructed beneath overhanging rock ledges where the platform of the web sags somewhat."
Range
Coras aerialis — USA; MD, MA, NH, NY(2)
Coras alabama — USA; AL, LA(2)
Coras angularis — USA; MD(2)
Coras cavernorum — USA; NC (this species may be synonymous with C. montanus but the name will remain valid until a study of the type can be made)(2)
Coras crescentis — USA
Coras furcatus — USA; FL(2)
Coras juvenilis — USA; CT, IN, MD, MI, NY, PA, VT, VA(2)
Coras kisatchie — USA; LA(2)
Coras lamellosus — USA; AK, CA, DC, IL, IN, KS, LA, MN, MS, NE, OR, PA(2)
Coras medicinalis — USA & Canada; AL, CO, CT, DC, FL, GA, IL, MA, MD, MI, MN, MS, NC, NJ, NY, NC, OR, TN, VA(2)
Coras montanus — USA & Canada; CT, ME, MN, NH, NY, NF, NS, ON, QC(2)
Coras parallelis — USA; CT, DE, MD, NJ(2)
Coras perplexus — USA
Coras taugynus — USA; AL, NC, TN(2)
Coras tennesseensis — USA; NC, TN(2)
Remarks
This genus was moved from Amaurobiidae in 2011.

Page origination: Eric suggested the possibility of these being in the genus Coras. Images are very similar to those in Howell and Jenkins. We've gathered the images here to hold them until ID can be worked out.
See Also
Tegenaria - info
how to know the spiders gives these few distinctions: Coras has robust chelicerae and the anterior median eyes usually larger than the anterior laterals. Tegenaria does not have robust chelicerae, anterior median eyes not larger than the laterals(usually smaller), posterior median eyes are very little smaller than the posterior laterals, and the posterior eye row is slightly procurved.
Internet References
~ www.amaurobiidae.com - Key to species.
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.North American Agelenidae of the genus Coras Simon
Muma, M. H. 1946. American Museum Novitates 1329: 1-20.