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Cyclocosmia truncata
(Ravine Trapdoor Spider)

Featured spider picture The spider species Cyclocosmia truncata, commonly known as Ravine Trapdoor Spider, belongs to the genus Cyclocosmia, in the family Halonoproctidae. Cyclocosmia truncata spiders have been sighted 3 times by contributing members. Based on collected data, the geographic range for Cyclocosmia truncata includes 2 countries and 2 states in the United States. Cyclocosmia truncata is most often sighted outdoors, and during the month of March.

Taxonomic Hierarchy

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Arachnida
  • Order: Araneae
  • Suborder: Mygalomorphae
  • Family: Halonoproctidae
  • Genus: Cyclocosmia
  • Species: Cyclocosmia truncata

Other Common Names

Ravine Trapdoor Spider, Oreo Spider


(Hentz, 1841)

Primary Colors

Sightings Overview

There have been 3 confirmed sightings of Cyclocosmia truncata (Ravine Trapdoor Spider), with the most recent sighting submitted on February 9, 2019 by Spider ID member jarhead. The detailed statistics below may not utilize the complete dataset of 3 sightings because of certain Cyclocosmia truncata sightings reporting incomplete data.

  • Web: 33% of the time, Cyclocosmia truncata spiders are sighted in a spider web (Sample size: 3)
  • Sex: 1 female and 0 male.
  • Environment: Cyclocosmia truncata has been sighted 4 times outdoors, and 0 times indoors.
  • Outdoors: Man-made structure (2). Ground layer (1). Forest (1).

Location and Range

Cyclocosmia truncata (Ravine Trapdoor Spider) has been sighted in the following countries: Mexico, United States.

Cyclocosmia truncata has also been sighted in the following states: Georgia, Tennessee.


Cyclocosmia truncata has been primarily sighted during the month of March.

  • January:
  • February: 1
  • March: 1
  • April: 1
  • May:
  • June:
  • July:
  • August:
  • September:
  • October:
  • November:
  • December:

Additional Remarks

Type species.

Featured Pictures

Picture of Cyclocosmia truncata (Ravine Trapdoor Spider) - Dorsal Enlarge Picture
Picture of Cyclocosmia truncata (Ravine Trapdoor Spider) - Female - Dorsal Enlarge Picture
  • Check iconFamily Check iconGenus Check iconSpecies
  • Submitted Calendar iconMay 27, 2018
  • Photographed Picture iconApr 29, 2008
  • RickCWest
  • Sex icon
  • Location iconSantiago, Nuevo Leon State, Mexico
  • Comment icon1 Comments
Picture of Cyclocosmia truncata (Ravine Trapdoor Spider) - Dorsal Enlarge Picture
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