How black soldier fly larvae can demolish a pizza so fast
Masses of larvae make a living fountain that knocks the slowpokes up and away
BY SUSAN MILIUS 7:05PM, FEBRUARY 5, 2019
NOM, NOM Look and learn, humans, as the black soldier fly larva (SEM view of one shown here) demonstrates just what it can do when those mouthparts encounter a pizza.
EYE OF SCIENCE/SCIENCE SOURCE
It all started with the can’t-tear-your-eyes-away video of black soldier fly larvae devouring a 16-inch pizza in just two hours. Watching sped-up action of the writhing mass inspired mechanical engineer Olga Shishkov of Georgia Tech in Atlanta to see what makes these insects such champions of collective feeding.
An individual Hermetia illucens larva doesn’t eat steadily, Shishkov found. One feeds for about five minutes on average and then stops for about another five. As a group of thousands, though, they flow continuously like a living fountain splashing up against the edge of their food, Shishkov and colleagues report February 6 in the Journal of the Royal Society Interface.
Shishkov borrowed techniques from the study of fluids, for instance treating larvae as particles moving with a current, and looked for overall patterns of flow in a writhing mass of as many as 10,000 insects. She tracked the directions larvae were wriggling and found that, around a chunk of food, a fountainlike flow develops.
As larvae took a break from binging, the hungry crowds pressing from behind forced them upward. Those at the top then fell away from cliff-face of food. This up-and-out push lets a larva eager to feed replace one that’s taking a break.
- video at link -
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You should see a drunk Glamrock devour a 16" pizza. Them larvae gots nothing on me! 
