In unusually old home, trap insect spotted in Europe (7,4)

I believe the answer is:

leopard moth

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

'europe' is the definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?

'in unusually old home trap insect spotted' is the wordplay.
'old home trap' can be anagrammed to 'LEOPARD MOTH'.
Though, I am not sure how the anagram is indicated.

'in' is the link.

Can you help me to learn more?

(Another definition for leopard moth that I've seen is " Insect".)

I've seen this clue in The Guardian.

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