A vast area of at least 800,000 hectares is currently being affected as the swarms of insects, each measuring about 8 centimeters long, annihilate fields of corn and other crops.
It's been more than 30 years since this part of southern Russia suffered such a dense plague of locusts, according to local officials.
Officials say at least 10% of crops have already been destroyed, and the locust feeding frenzy is far from over, threatening to devastate the livelihoods of local farmers.
Walking through what remains of his corn field in the Stavropol region, one farmer, Pyotr Stepanchenka, looks distraught.
"Look," he says to the camera, "there is nothing left of the corn. The locusts ate it all, from the leaves to the cobs."
On state television, Russian news broadcasts are linking the plague to climate change, connecting the phenomenon to recent flooding amid higher than average temperatures.
Officials from the Russian ministry of agriculture have declared a state of emergency, but appear helpless to prevent the destruction.
They say they are stepping up efforts to save the harvest by increasing crop-spraying flights.
But high summer temperatures, they say, are decreasing the effectiveness of the powerful pesticides they use.
Also, officials say the locust swarms are moving fast across southern Russia, sometimes too fast for the authorities to keep up, leaving a trail of destruction behind them.
"In Kalmikya, Astrakhan, Volgograd, and Dagestan, there is already no food left for the locusts, so they have moved on to other sources of food," says Tatiana Drishcheva of the Russia Agricultural Center, a government organization.
"They have wingspans of nearly 12 centimeters, like small sparrows," she added.
Some frustrated locals, facing ruin, have posted videos of themselves desperately trying to hold back the tide. But it all seems futile in the face of such an overwhelming Russian swarm.