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Common Spider Species

More than 35,000 spiders exist throughout the world, with a few thousand in Australia alone. Most spiders cannot harm you, however there are species that can. Generally, spiders are not nice to look at and their webs often cause mess. From Black House to Wolf Spider, here is more information about different spider species to help you overcome your fears.

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Yellow Sac Spider

Yellow Sac Spider

(Cheiracanthium spp.)


  • Pale in colour, abdomen can be yellow or beige with a faint dark stripe running lengthwise.
  • 1/4 to 3/8 inches long
  • 4 pairs of legs, the 1st pair longer than the 4th.
  • Eight similarly-sized dark eyes arranged in two horizontal rows.


  • A female produces around 5 egg sacs each with 30 to 48 eggs. The female may produce several egg masses during her lifetime.
  • Approximately 30 percent of adult males get eaten by females after mating.


  • Feeding — usually small insects.
  • Location — they build a silken tube or sac (instead of a web) in a protected area which is used as their daytime retreat.
  • Visibility — they emerge at night to look for food. They drop to the floor to seek cover when disturbed.

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Identify the signs of spiders.