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GARDEN ORB SPIDER

garden orb spider pest control sydney

The Garden Orb Weaving Spiders are a large group of spiders which are distributed throughout Australia, with over 100 known species in Australia. They make sticky, suspended, wheel-shaped orb webs. Their webs can be seen openings between trees and shrubs where insect activity is high.

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Other Names

Garden Orb Weavers

Appearance

  • 2 cm – 3 cm (female), 1.5 cm – 2 cm (male)
  • They are a stout, reddish-brown or grey
  • They have a leaf-shaped pattern on their bodies
  • They have a roughly triangular abdomen
  • The have two noticeable humps towards the front
  • sometimes have a dorsal stripe which may be white or brown edged with white

Life cycle

  • The female life cycle is about 12months
  • The female lays her eggs in late summer to autumn.
  • The garden orbs eggs are sealed in a fluffy silken cocoon and are attached to foliage
  • The spiderlings hatch in Autumn
  • The spiderlings float on the breeze using small silk strands which look like balloons
  • The spiderlings build their own webs to wait out the winter
  • During spring the spiderlings develop quickly
  • Adult females usually die in Autumn to early winter
  • Males and females are similar in size

Habitat

  • The Garden Orb spider builds large, strong, vertical orb webs
  • The construction of the web begins at night and is usually taken down by dawn
  • The spider rests head-down in the centre of the web, waiting for prey.
  • Wraps its prey in silk, rotating it with its shorter middle legs.
  • Once the prey is secure, it bites down and injects venom, then waits for its prey to die
  • The spider rests on nearby foliage with its legs drawn under the body during the day

Bites

  • Orb weavers are not common biters
  • If a person is bitten, numbness or swelling may occur
  • Dizziness or nausea can also be a side effect to their bite