Distribution Records
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Vetting Levels |
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Adult phenology:
High Mountains (HM) ≥ 4,000 ft.
Low Mountains (LM) < 4,000 ft.
Piedmont (Pd)
Coastal Plain (CP)
Click on graph to enlarge
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Originally described as Clubiona tranquilla by Hentz in 1847, it was officially placed in the Clubionidae in 1867, where it remained until it officially became a corinnid in 1967. When the genus was revised in 1974, it reverted to being a clubionid until it was moved again to the Corinnidae in 1995. Most recently, the corinnid subfamily, Trachelinae, was raised to family rank in 2014, though further work suggests that the genus may belong in the Gnaphosoidea. Watch this space! |
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The tan/grey abdomen and dark red cephalothorax of this spider lend an appearance similar to that of Dysdera crocata (q.v.), but the latter have notably large, forward-projecting chelicerae. Furthermore Trachelas is often found in a silken retreat on foliage, while Dysdera is usually found in duff, where it feeds on isopods. |
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"Spiders of the genus Trachelas characteristically have shiny red carapaces
and sterna that contrast strikingly with their pale abdomens. They spend
considerable time in silk retreats spun in rolled leaves, under loose bark, or on
objects on the ground, and are sometimes collected by sweeping or beating'
Maturity is apparently attained in autumn, when individuals may be seen in
houses, and the eggs are laid in white sacs during the same season. Some have been
known to bite when handled; the venom causes local swellings and lesions with
severe pain."(1) |
| distribution_reference |
Eastern US and Canada
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| technical_reference |
(1) Dondale, C. D. & Redner, J. H. (1982). The insects and arachnids of Canada, Part 9. The sac spiders of Canada and Alaska, Araneae: Clubionidae and Anyphaenidae. Research Branch Agriculture Canada Publication 1724: 1-194.1
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111 |
| adult_id | 1 identifiable by photo 2 identifiable by photo of specific features and/or supplementary info 3 identifiable from specimen only |
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checklist_mt_high
>=4,000 ft. | |
checklist_mt_low
<4,000 ft. | |
checklist_pd
Piedmont | |
checklist_cp
Coastal Plain | |
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Photo Gallery for Trachelas tranquillus a cuspuled spider |
 | Recorded by: Mark Basinger
McDowell Co.
Comment: Timid, shy spider |  | Recorded by: Mark Basinger
McDowell Co.
Comment: Timid, shy spider |
 | Recorded by: Brian Bockhahn
Macon Co.
Comment: |  | Recorded by: Owen McConnell
Graham Co.
Comment: |
 | Recorded by: Vin Stanton
Buncombe Co.
Comment: found inside of door near moth sheet, early AM |  | Recorded by: Barbara McRae
Macon Co.
Comment: It was on the window of my car when I returned from a walk. |
 | Recorded by: Steve Hall
Orange Co.
Comment: Seen at moth sheet |  | Recorded by: Steve Hall
Orange Co.
Comment: Lacks trichobothria on the legs |
 | Recorded by: Steve Hall
Orange Co.
Comment: Lacks trichobothria on the legs |
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