Minor detail (my OCD coming out) -- until 2006, the Nephila genus of spiders was in the same Family as the Argiope spiders. In 2006, based on some esoteric spider study, the Nephalids were "elevated to their own Family, the Nephilidae.
So the taxonomic structure is the same for both all the way down the chain :
Kingdom: Animalia
Philum: Arthropoda
Class: Arachnida
Order: Araneae
SubOrder: Araneomorphae
Superfamily: Araneoidea
Until 2006, both were in the same family and were kinda like "1st cousins"
Family: Araneidae
Genus: Argiope Genus: Nephila
Then in 2006, the Nephilids were elevate and so the 2 became "3rd cousins"
Family: Araneidae Family: Nephilidae
Genus: Argiope Genus: Nephila
So there's your Arachnid Taxonomy lesson for the day.

