>> WELL, A VERY SMALL BUT VERY DESTRUCTIVE INSECT RIGHT THERE HAS BEEN FOUND IN OKLAHOMA FOR THE FIRST TIME. IT'S CALLED ACORN AT LEAF HOPPER AND IT CAN WREAK HAVOC ON THE CORNFIELDS, FARMERS AND GROWERS HIS MEGAN THOMPSON SHOWS US HOW THIS TINY PAST IS HAVING A BIG IMPACT. >> VERY POPULAR OKLAHOMA FARM. >> THIS DANGEROUS PEST IS HARD TO SEE WITH THE NAKED EYE. BUT THE IMPACT ON THIS CORNFIELD IS QUITE NOTICEABLE. THE INSECT EVEN FORCING LONGTIME FARMERS TO CHANGE THE WAY THEY PLANT IS JUST THIS TERRIBLE, TERRIBLE SITUATION WE FOR THE FIRST TIME EVER. THE CORLEY COPPER NOW CALLS OKLAHOMA HOME. WE HAD IN OUR CORN FIELDS. ALL OUR CORN FIELDS HAD IT. JAKE NOWAKOWSKI SAYS HE NOTICED SOMETHING WAS OFF WITH HIS CROPS IN JUNE. HIS FARM IS A TYPICAL HOT SPOT EVERY SUMMER WE THOUGHT WE WERE GETTING GOOD AT RAISING CORN THIS COME UP. SO NOW WE'VE GOT ANOTHER. >> ANOTHER CHALLENGE TO WE HAVE CHALLENGE BESIDES DRY WEATHER IN OKLAHOMA. HERE IS WE'VE GOT TO. >> THERE WAS THIS PAST THE INSECT CAUSES WHAT'S CALLED CORN STUNT DISEASE THAT'S INFECTED AND PUT INFECTION IN THAT PLANT. MAKE US SICK. SO IT WON'T PUT AND PUTTING ON THE ENERGY IN ITS FIGHT ITSELF AND ITS NOT PUT ANY ENERGY INTO THE CRAWL. DR. ASHLEY FERRIS IS AN ENTOMOLOGIST AT OKLAHOMA STATE UNIVERSITY. SHE SAYS THE LEAF HOPPERS ARE COMING FROM LATIN AMERICA. THERE'S ACTUALLY A FEW DIFFERENT REASONS AS TO WHY IT COULD FINALLY BE REACHING OF HOME OF THE FIRST BEING THAT OF THE TO TRAVEL. THERE COULD BE OTHER REASONS, TOO. WE MIGHT POSSIBLY ATTRIBUTE IT TO SOME OF THESE WARMING TEMPERATURES. NOWAKOWSKI SAYS HE HAD TO START HIS HARVEST EARLIER THAN NORMAL BUT STUNNED DISEASE STILL CAUSE THEM FINANCIAL LOSS. WE HAD OUR CORN PLANTED EARLY THIS YEAR SAY THAT SOME AS WHY DIDN'T GET ALL OF IT BEFORE. IF WE DIDN'T KNOW IT WAS OUT THERE AND IT WAS WORSE, IT COULD HAVE GOT THE WHOLE CORN CROP. >> AND MADE IT LOOK, YOU KNOW, A BIG CATASTROPHE REALLY IN MCLEOD MEGAN THOMPSON, OKLAHOMA'S NEWS 4. >> THAT'S THE