A swarm of winged insects enveloped a pyramid: Sound familiar?

An invasion of pallid-winged grasshoppers descended on Las Vegas this past week, taking over the Strip and several of the city’s most popular tourist spots, including the night skies above the Luxor hotel and casino.

The resort, a 30-story pyramid inspired by ancient Egypt, says that its Sky Beam, a powerful column of light issuing nightly from the peak of the pyramid, can be seen by airline pilots as far away as Los Angeles.

But the beam has also become a magnet for grasshoppers, which experts say could linger in Las Vegas for weeks.

Jeff Lockwood, a professor of natural sciences and humanities at the University of Wyoming who has written extensively about grasshoppers, said the infestation was not a cause for alarm.