(Bark Spiders)

Caerostris, commonly known as Bark Spiders, is a genus of spiders in the family Araneidae. Caerostris spiders have been sighted 5 times by contributing members. Based on collected data, the geographic range for Caerostris includes 3 countries and 0 states in the United States. Caerostris is most often sighted outdoors, and during the month of April.

Taxonomic Hierarchy

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Arachnida
  • Order: Araneae
  • Suborder: Araneomorphae
  • Family: Araneidae
  • Genus: Caerostris

Other Common Names

Bark Spiders


Thorell, 1868

Sightings Overview

There have been 5 confirmed sightings of Caerostris (Bark Spiders), with the most recent sighting submitted on May 9, 2019 by Spider ID member patpoole. The detailed statistics below may not utilize the complete dataset of 5 sightings because of certain Caerostris sightings reporting incomplete data.

  • Web: 80% of the time, Caerostris spiders are sighted in a spider web (Sample size: 5)
  • Sex: 1 female and 0 male.
  • Environment: Caerostris has been sighted 4 times outdoors, and 1 times indoors.
  • Outdoors: Low foliage (2). Forest (2).

Location and Range

Caerostris (Bark Spiders) has been sighted in the following countries: Germany, Philippines, South Africa.


Caerostris has been primarily sighted during the month of April.

  • January:
  • February:
  • March:
  • April: 2
  • May: 1
  • June:
  • July:
  • August: 1
  • September:
  • October:
  • November:
  • December: 1

Caerostris Species

Featured Pictures

Picture of Caerostris spp. (Bark Spiders) - Lateral Enlarge Picture
Picture of Caerostris spp. (Bark Spiders) - Dorsal Enlarge Picture
Picture of Caerostris spp. (Bark Spiders) Enlarge Picture
Picture of Caerostris spp. (Bark Spiders) - Dorsal Enlarge Picture
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