Immature creature turns up with parent (4)

I believe the answer is:

pupa

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'immature creature' is the definition.
'pupa' can be an answer for 'creature' (pupa is a kind of animal). I'm not sure about the 'immature' bit.

'turns up with parent' is the wordplay.
'turns' says the letters should be written in reverse.
'with' means one lot of letters go next to another.
'parent' becomes 'pa' (pa can mean dad or father).
'up' reversed gives 'pu'.
'pu'+'pa'='PUPA'

Can you help me to learn more?

(Other definitions for pupa that I've seen before include "So peacock may have appeared" , "developing creature" , "Pre-adult insect or chrysalis" , "Immature insect" , "creepy-crawly" .)

I've seen this clue in The Irish Times.

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