Problem urgently keeping primate (5)

I believe the answer is:

lemur

'primate' is the definition.
(I've seen this before)

'problem urgently keeping' is the wordplay.
'keeping' indicates a hidden word.
'LEMUR' is hidden within 'problem urgently'.

(Other definitions for lemur that I've seen before include "Monkey-like animal of Madagascar" , "Tree-dwelling primate" , "one in the bush?" , "Monkey-like creature of Madagascar" , "Arboreal mammal common to Madagascar" .)

I've seen this clue in The Telegraph.

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