Are there five white rings on the hind legs?
Yes
the hind legs show a prominent pattern of five white rings
Every segment of the hind legs of an Asian tiger mosquito has white scales that form five white rings. Your insect could be an Asian tiger mosquito if this color pattern occurs.
No
the hind legs show no pattern or a different amount of white rings
Every segment of the hind legs of an Asian tiger mosquito has white scales that form five white rings. Your insect is probably no Asian tiger mosquito if there is no such color pattern of if it differs in the amount of white rings.