Locals reacted with horror after seeing millions of the bugs swarm onto beaches in the resorts of Mar de Ajo, 31 miles away from the capital Buenos Aires. Holidaymakers were horrified as millions of bugs covered miles of coastline after they swarmed a beach
In scenes akin to a horror film, images posted on social media show the beaches turned black by the plague of beetles as they cover miles of coastline.Although no one is exactly sure what is behind the phenomenon, social media has gone into meltdown with theories.
Some believe it is a portent of the end of the world with commentators claiming the influx of beetles is an "ominous warning of impending doom" and "the end of times is near… they can sense it."
Others suggested an earthquake had hit the area before the beetle invasion.
One commentator, who identifies himself as khnagar, said: "It looks like Black Maize Beetle (Heteronychus Arator), which are known for having mass flights in the summer/autumn where they mate and all that.
"Or it's some similar type of beetle. They only live for a few days at that stage after crawling out of the ground.
"So a lot of beetles flew, got swept out to sea by the winds, and then came back to the beach, most of them dead or dying. Most likely scenario I can come up with."
Scientists say the beetles live for about two years underground and come out to mate.
They only live for four more days during this cycle.
The "hatching" takes place every year and although in the past it usually takes place in January, for the last couple of years it has been happening later.
Now local news says locals are trying to sell the beetles online. According to one ad, a man is offering them for £46 per kilo or £21 per pound.
According to some, secretions from the insect can strengthen the body's defences against cancer, AIDS, asthma and diabetes, among other illnesses.