Spotted lanternflies are back for a 10th year

State of play: A decade since the polka-dotted insect first appeared in the U.S. in Berks County, 52 of the state's 67 counties now have active infestations.

The big picture: Spotted lanternflies have spread to more than a dozen other states, including New York, New Jersey and Virginia.

Zoom in: The threat from the invasive bugs is growing in some parts of Pennsylvania (👋 Westmoreland and Allegheny counties), but it has declined in others, state Department of Agriculture spokesperson Shannon Powers tells Axios.

• Philly is way less buggy.

By the numbers: The following are reported spotted lanternfly sightings in counties in 2019 compared to 2023, per state data:

• ⬇️ Philadelphia: 11,548 ('19) vs. 308 ('23)
• ⬇️ Bucks: 7,213 vs. 73
• ⬇️ Montgomery County: 17,524 vs. 171
• ⬆️ Allegheny County: 23 vs. 20,716

The intrigue: Lanternflies are attracted to buzzing power lines, and USDA scientists are studying ways they could use vibration to help control the bug population as an alternative to insecticide.

Threat level: The lanternflies' feeding habits pose the most risk to Pennsylvania's grape and hops production, as well as immature trees and young plants grown at nurseries.

• The insects haven't damaged mature hardwood trees as much as state officials originally believed, Powers says.

🍯 1 cool thing: When life gives you spotted lanternflies, make honey.

• Philadelphia Bee Co. sells the novelty DoomBloom honey made from the honeydew of the invasive bugs ($14).

💥 Pro tips: Killing the bugs and their egg masses is encouraged.

• You can also build your own circle trap to terminate 'em en masse.
• Plus: Report sightings on the state's website.

What's next: Spotted lanternflies are expected to hatch between now and June, and reach full maturity starting in July.