Yellow jacket, for one (4)
I believe the answer is:
wasp
'yellow jacket for one' is the definition.
(I know that Vespula maculifrons is a type of hornet)
This is the entire clue.
(Other definitions for wasp that I've seen before include "colonist" , "A hymenopteran" , "type dominant across the pond" , "spiteful person?" , "Buzzer" .)