Red back Spiders, and all Theridiidae for that matter, have two rows of four eyes, which makes for a grand total of eight eyes.
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.
Redback spiders have eight legs, like all spiders.
Tall
by humping
what are red back appearances
Redback, found in Australia
Yes
what are red back appearances
sometimes
Yes
not unless they have red on their back
Australia