Thats easy! Red back Spiders are called 'red back spiders because they have a red (or sometimes dark orange) stripe on their back. they sometimes have a diamond slightly below that stripe aswell.
Tall
by humping
what are red back appearances
Redback, found in Australia
If its black, has a large butt and there's a red shape on its back the resembles an hourglass, then its a black widow spider and they are very poisonous
Yes
what are red back appearances
sometimes
Yes
not unless they have red on their back
Australia
red back Spiders live in webs and also found under rocks and logs! They can also be found in corners of sheds and rooms.