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Celaenia

Celaenia belongs to the genus of orb-weaver spiders indigenous to Australia. At present, as per the April 2019 records, there are 11 species in this genus.

Celaenia

Spiders Belonging to this Genus

  • Celaenia atkinsoni  
  • Celaenia calotoides  
  • Celaenia distincta  
  • Celaenia dubia  
  • Bird-dropping Spider (Celaenia excavate)  
  • Celaenia hectori
  • Celaenia olivacea
  • Celaenia penna
  • Celaenia tuberosa
  • Celaenia tumidosa
  • Celaenia voraginosa

Physical Description and Identification

Adults

Size: The females of this genus have a size of about 0.47 to 0.51 inches (12 to 13 mm) and are bigger than the males, which have an approximate body length of 0.07 to 0.11 inches (2 to 3 mm).

Scientific Classification

Color: The color varies from one species to the other. The bird-dropping spider, the most well-known species of this genus, has a white, black, and gray body, similar to a bird’s dropping.

Other Characteristic Features: The spiders of this genus are likely to have a triangular-shaped abdomen and long forelegs.

Eggs

The egg sacs are brown and marble-shaped with a single sac containing about 200 eggs.

Spiderlings

The spiderlings mostly have a light-colored body, darkening with maturation.

The Web

Not much information is available about their web. However, in the bird-dropping spiders, only the young ones build circular webs.

Are Spiders of the Celaenia Genus Venomous

Though their levels of toxicity remain undetermined, a bite from this species could lead to minor redness and pain.

Quick Facts

DistributionParts of Australia and New Zealand
HabitatForests, woodlands, and wetlands
PredatorsMostly birds
DietInsects particularly moth
LifespanApproximately 1 year

Did You Know

  • Swedish arachnologist Tamerlan Thorell described this genus first in 1868.

Image Source: Live.staticflickr.com

Celaenia belongs to the genus of orb-weaver spiders indigenous to Australia. At present, as per the April 2019 records, there are 11 species in this genus.

Celaenia

Spiders Belonging to this Genus

  • Celaenia atkinsoni  
  • Celaenia calotoides  
  • Celaenia distincta  
  • Celaenia dubia  
  • Bird-dropping Spider (Celaenia excavate)  
  • Celaenia hectori
  • Celaenia olivacea
  • Celaenia penna
  • Celaenia tuberosa
  • Celaenia tumidosa
  • Celaenia voraginosa

Physical Description and Identification

Adults

Size: The females of this genus have a size of about 0.47 to 0.51 inches (12 to 13 mm) and are bigger than the males, which have an approximate body length of 0.07 to 0.11 inches (2 to 3 mm).

Color: The color varies from one species to the other. The bird-dropping spider, the most well-known species of this genus, has a white, black, and gray body, similar to a bird’s dropping.

Other Characteristic Features: The spiders of this genus are likely to have a triangular-shaped abdomen and long forelegs.

Eggs

The egg sacs are brown and marble-shaped with a single sac containing about 200 eggs.

Spiderlings

The spiderlings mostly have a light-colored body, darkening with maturation.

The Web

Not much information is available about their web. However, in the bird-dropping spiders, only the young ones build circular webs.

Are Spiders of the Celaenia Genus Venomous

Though their levels of toxicity remain undetermined, a bite from this species could lead to minor redness and pain.

Quick Facts

DistributionParts of Australia and New Zealand
HabitatForests, woodlands, and wetlands
PredatorsMostly birds
DietInsects particularly moth
LifespanApproximately 1 year

Did You Know

  • Swedish arachnologist Tamerlan Thorell described this genus first in 1868.

Image Source: Live.staticflickr.com

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