The common black house spider eats redback spiders. This probably explains why redbacks are uncommon inside the house. Both redbacks and black house spiders are shy (especially the redback). A house spider will get to recognize you if you feed it ;)
a redback spider
you first preserve the spider or rap it then you call some entomoligist to see if its a new or crossbred species
Redback
i think the Australian redback but i am not sure u could look it up u kno don't be lazy
Redback
Redback
They are endemic to Australia
the redback?
The spider is probably a black widow, they are dangerous because they have extremely poisonous venom
http://en.wikipedia.org/wiki/Redback_spider
Redback spiders are a unique species that exist solely in Australia. If you need more information on them there are a number of websites available on Google.