Traditionally, spiders lived outside. But the luxuries of modern homes have meant they have become accustomed to a higher standard of living. Credit:Stuart Hay

Further genetic and morphological analysis will be needed to determine whether it is a new species, but ANU biologist Dr Thomas Wallenius​ was pleased with the surprise find.

"It was unexpected that we'd find such a beautiful specimen," Dr Wallenius said.

"While a lot of the fauna is quite well documented, the surveys on invertebrates [in the national park] haven't been done as intensively so we're currently working to see if the funnel-webs fit into current classifications."

While the tree-dwelling funnel-web differs morphologically to its ground-dwelling Sydney cousin, Dr Wallenius said "both are quite dangerous".