A once-in-221-year convergence of two broods of periodical cicadas are emerging at the same time in the United States. The big effect of the cicadas is the sheer numbers. Trillions are expected to populate 16 states by mid to late June. They can be overwhelming, messy and loud.

But individually, up close and personal, a cicada has splashes of colour, subtle shapes and that special something that some scientists and artists say translate to beauty.

Periodical cicadas are “more otherworldly-looking” than other insects and then the fact they come out every 13 or 17 years adds to their allure, making “them feel like something out of a science fiction movie,” said Jonathan Monaghan, a Washington, D.C.-based visual artist.

“Up close, there is a subtle beauty, particularly with their vibrant cadmium red eyes,” Monaghan said. “Visually, they are at their best freshly molted because there is more contrast on their bodies, showing off some really interesting patterns. Overall though, I still think they are rather goofy looking.”

When collage artist Luis Martin, a self-described art engineer in Brooklyn, New York first saw cicadas, he was entranced.

“They were just so beautiful and diaphanous that I kind of fell in love,” said Martin, who sported a cicada bolo tie during a Zoom interview. “It looked like a fairy.”

But, he said, they also seem scary.

“It kind of goes back to these beautiful colours that we tend to think is kind of ugly, right? Because they’re brown, they’re kind of metallic, kind of like alien,” Martin said. “As a brown person myself I find them absolutely beautiful. I can totally see myself in them.”

Scientists are even more mesmerised.

“There’s a lot of things in the world today to get freaked out about. Cicadas aren’t one of them,” said Mount St Joseph University biologist Gene Kritsky, who wrote a book on this year’s dual emergence. “They’re beautiful insects. They’ve got these red eyes, black bodies, orange-colored veins on these membranous wings. I love the way they come up in these big numbers. I like that I can predict when they come out. It’s a scientific experiment every time”, he added.