Group of insects (5)
I believe the answer is:
swarm
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">group of insects</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for swarm that I've seen before include "Find insect population" , "Mass of flying insects" , "Mob" , "Large crowd" , "Large group of bees" .)