Demon beginning to corrupt youth in America, bouncing up and down (8)

I believe the answer is:

succubus

I'm a little stuck... Click here to teach me more about this clue!

'demon' is the definition.
(I know that succubus is a type of demon)

'beginning to corrupt youth in america bouncing up and down' is the wordplay.
I cannot quite see how this works, but
'america' could be 'us' (United States) and 'us' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Another definition for succubus that I've seen is " Nocturnal female demon".)

I've seen this clue in The Independent.

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