Cicadas Take Over Louisville: Periodical vs. Annual Explained

LOUISVILLE, Ky. — Cicadas have invaded the Louisville area over the last few weeks, and they’re not finished yet. While many residents may not be seeing a large number, some locals are noticing an increase in these flying insects, raising questions about them.

Morning anchor Caray Grace addressed one main question: What is the difference between periodical cicadas and annual cicadas? According to Blair Leano-Helvey, owner of Idlewild Butterfly Farm, the cicadas being seen now are known as periodical cicadas, which emerge every 17 years.

Leano-Helvey explained that these periodical cicadas are much smaller than the annual cicadas that appear every summer. “The annual cicadas are larger,” she said. “They’re a little bit delayed due to the cooler temperatures, but as we get hotter, we will probably see a lot more of them.”

When the periodical cicadas emerge completely, they will be ready to mate. Leano-Helvey detailed how the mating process works: male and female cicadas will pair up, and the female will lay her eggs on tree limbs. After the eggs hatch, the nymphs will drop to the ground and root into the trees, beginning the cycle again for another 17 years.

Leano-Helvey also shared a fun fact: cicadas are safe to eat and can be a good source of protein. While it’s not a common dietary choice, those curious about culinary exploration may consider them for a unique dish.