Colonial insects (4)
I believe the answer is:
ants
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">colonial insects</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ants that I've seen before include "Industrious insects" , "Small social insects" , "Busy little insects" , "Emmets" , "Termites" .)