Genus Coras

See the World Spider Catalog.

From Vergil's Aeneid, one of the Argive twins.(1)

There are 14 species in the USA and Canada and 1 species in Korea.

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."

Listed ranges are primarily based on specimen records in scientific papers and therefore may not be exhaustive or complete descriptions of 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 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; possibly confined to Gulf Coast states. Holotype from MS.(2)

Coras taugynus — USA; AL, NC, TN(2)

Coras tennesseensis — USA; NC, TN(2)

This genus was moved from Amaurobiidae in 2011. Although these spiders have been placed in a cribellate family, they do not have a cribellum.

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.