Primates create multiple agreements... (3-4)

I believe the answer is:

aye-ayes

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

'create multiple agreements' is the wordplay.
'multiple agreements' means three substitutions for 'agreement'.
'create' says to put letters next to each other.
'agreement' becomes 'a' (this could be a standard abbreviation which I don't know about).
'agreement' becomes 'yea' (archaic form of 'yes').
'agreement' becomes 'yes' (saying yes to something).
'a'+'yea' is 'ayea'.
'ayea'+'yes'='AYE-AYES'

Can you help me to learn more?

I've seen this clue in The Irish Times.

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