How to Spot and Report the Spotted Lanternfly in Missouri

By Blake Jackson

University of Missouri Extension specialists warn that the spotted lanternfly (SLF), a destructive invasive pest, could be seen in Missouri this summer.

Emily Althoff, urban entomologist with MU Extension and Lincoln University, says the insect was recently found in neighboring Illinois. “It’s knocking at our door,” says Althoff.

The SLF was first discovered in the U.S. in 2014 and has now been confirmed in 18 states, according to the USDA Animal and Plant Health Inspection Service.

Its primary host is the tree of heaven (Ailanthus altissima), but it also feeds on grapes posing a serious risk to Missouri’s $4.2 billion grape and wine industry.

Dean Volenberg, viticulture specialist and director of the Missouri Grape and Wine Institute, emphasizes the need for early action. “If allowed to spread, SLF could have a devastating effect on Missouri fruits, including grapes, ornamental and forest industries,” Volenberg says. “Public awareness will be critical in detecting and controlling this invasive pest to prevent economic and ecologic losses.”

According to Althoff, SLF is most likely to show up in Missouri vineyards between July and December. Farmers and vineyard operators should inspect equipment and vehicles, as the pest often hitchhikes on metal surfaces like trains and trucks.

“There is no pattern to the spread of SLF on the emerging infestation front because of the way it travels on moving vehicles,” says Volenberg. “It’s a scattershot.”

The SLF damages plants by using a piercing-sucking mouthpart to tap into the phloem and feed on sap. It secretes honeydew, a sticky residue that attracts other pests, promotes mold growth, and harms plant health.

Althoff notes adult lanternflies resemble moths in the fall, with gray wings marked by black spots and patterned wing tips. They’re easiest to find at dusk or night as they climb plant trunks.

If you see one, capture it or take a photo and email it to emilyalthoff@missouri.edu. Specimens can also be delivered to a local extension center with collection details.

Be cautious handling tree of heaven; its sap may cause nausea, headaches, or heart issues.

Photo Credit: spotted-lanternfly