In particular, alpha male in Lord of the Flies (5)
I believe the answer is:
ralph
'male in lord of the flies' is the definition.
(character in the novel Lord of the Flies)
'in particular alpha' is the wordplay.
'in' says the answer is hidden in the clue.
'RALPH' can be found hidden inside 'particular alpha'.
(Other definitions for ralph that I've seen before include "Chap" , "Fellow's name" , "man" , "Boy's name" , "___ Fiennes, English actor, b. 1962" .)