Which Invasive Pests Are Actually In Ohio?

Most of the insects in the national news are not in Ohio. Three are: the spotted lanternfly, under a statewide quarantine, the box tree moth, quarantined in 14 counties that do not include ours, and the Asian longhorned tick, tracked by Ohio State University Extension into 28 counties. Joro spiders, fire ants and Asian needle ants are not confirmed here.

Headlines move faster than insects do. A story about a hand sized spider in Georgia reads the same in North Canton as it does in Atlanta, and the question underneath it never changes: has anybody with authority confirmed the thing in Ohio, and does it change anything about this house? Three of the seven below have been confirmed in Ohio by an agency or an extension service. The rest have not.

What Has Actually Been Confirmed In Ohio

Two kinds of answer matter here. A quarantine means a state or federal agency has verified that a pest is present and established in the area it covers. A photo posted to a public sightings database is not that, and the two get reported as if they were the same thing.

Are Joro Spiders In Ohio?

No population has been announced here by the Ohio Department of Agriculture or the Ohio Department of Natural Resources. The nearest confirmed ground is Pennsylvania, where Penn State Extension publishes a fact sheet on the spider and its Bucks County master gardeners post updates as local sightings come in.

What that fact sheet says about the animal is the part worth keeping. Penn State Extension calls Joro spiders harmless to people: reluctant to bite, carrying venom it describes as weak and not medically important, with fangs small enough that they have difficulty piercing human skin. Where a bite does happen it describes localized pain and redness that fades on its own, less painful than a bee sting, with no published allergic reactions. The Bucks County update is blunter still, saying there is no medical risk in interacting with them and that pesticide use is not necessary.

So a Joro spider in a Stark County garden would call for a camera, not a can. The big webs that actually go up across Ohio porches every September belong to familiar residents, and our guide to house spiders in Ohio sorts out which ones are worth a second look.

Are There Fire Ants In Ohio?

Not under quarantine, which is the cleanest answer anyone can give. USDA APHIS runs the imported fire ant quarantine under 7 CFR 301.81 and revises it by federal order. The order issued in August 2025 lists the regulated states as Alabama, Arkansas, California, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas and Virginia, plus Puerto Rico. Ohio is not among them. The same order removed a New Mexico county, which tells you the map gets maintained rather than left to sit.

What the quarantine regulates also tells you how the ant travels: nursery stock, sod and soil moving equipment leaving a regulated area. Shipments, in other words, which is why the APHIS federal orders turn on verification from state departments of agriculture that the ant is present and established somewhere.

The stinging insects people actually run into in Stark and Summit County are yellow jackets and paper wasps, which is stinging insect work, and the ants coming through Ohio kitchens are nuisance species we cover in why ants keep coming back.

The Ant Worth Learning Now Rather Than Later

The Asian needle ant has no Ohio advisory behind it. The guidance comes from NC State Extension and Clemson, both writing for the Southeast. It is still worth five minutes, because it behaves nothing like the ant most people picture when they hear the word invasive.

• Small and dark, with a stinger showing. NC State Extension puts it at about 5 mm, dark bodied with lighter legs and mouthparts, and a stinger visible at the end of the abdomen.
• No mound to spot. Nests sit under mulch, logs, rocks, leaf litter and rotting wood, so there is nothing to see from the driveway.
• A poor climber. NC State describes it making a few futile attempts at the wall of a jar before giving up and staying on the bottom, which is one of the easier tests in the field.
• Colonies, plural. Multiple queens spread across multiple nests, so knocking out one nest settles nothing, and baits work badly because these ants do not lay foraging trails.
• The sting. Not an aggressive ant, but it stings when it gets pressed, usually when a hand goes into mulch or under a rock. Clemson notes the venom can trigger severe allergic reactions, anaphylaxis included, in people who are sensitive to it.

The management advice travels better than the ant has. Thick gloves for moving mulch and debris, mulch spread thin instead of piled against the house, and rotting logs, branch piles and leaf heaps cleared out. Do that in a Hartville or North Canton yard and the real beneficiaries are the tenants already living in that damp layer, the sowbugs, millipedes and centipedes that come inside every time it turns wet. That ground is covered in millipedes and centipedes in Ohio basements, and keeping that band quiet is most of what a quarterly pest plan is doing outside.

The Headline Pest That Is Already Here

The Asian longhorned tick skipped the news cycle and arrived anyway. Ohio State University Extension reported the first Ohio confirmation on a dog in Gallia County in 2020. Its tick team counted 11 Ohio counties entering 2024 and 19 by May 2025, Wayne County among them, and an Extension notice this year put the total at 28 counties through calendar year 2025.

Ohio State's fact sheet on the species, VME-1035, lists more than two dozen hosts including cattle, sheep, goats, horses, dogs and people, with deer and raccoons the most common wildlife hosts. The livestock side is the heavy one: infestations cause distress, lower production and growth, abortions or stillbirths and death, and the tick can transmit bovine theileriosis, which is fatal to cattle. The same fact sheet notes that no products are currently labeled for this tick in the United States, and that large numbers on livestock should go to the Ohio Department of Agriculture's Division of Animal Health.

For people the CDC draws it narrower. The tick has been found on people but appears less attracted to humans than the blacklegged, lone star and American dog ticks, and it has not been confirmed to spread germs to people in the United States. The detail that explains how fast it moves is reproductive: females can reproduce without mating and lay up to 2,000 eggs, so a single tick riding in on one animal can seed a pasture.

None of that is a spring problem only. Ohio State's 2025 tick update reports tick activity and positive detections in all twelve months of the year in this state, which is the argument for checking the dog in November the same way you would in June. Removal, yard edges and what a treatment can and cannot do are in our fall tick guide, and the yard side of it sits with mosquito and tick control.

What To Do With A Bug You Cannot Place

Photograph it beside a coin for scale, keep the specimen if you can, and get a name on it before anybody treats anything. Where to send it in this state is laid out in getting an insect identified in Ohio.

It also helps to know what a quarantine asks of you, which is usually nothing. Ohio made the spotted lanternfly quarantine statewide on February 17, 2026, covering all 88 counties where 18 had been covered before, and stopped asking the public to report sightings because the insect is established. Residents are asked to identify it and destroy it instead, which is the practical version of the advice in our spotted lanternfly guide. The box tree moth rules run the other way: the state expanded that quarantine on January 30, 2026 to Preble, Clark, Cuyahoga, Ashtabula, Lorain, Lake and Lucas counties, and the federal order of August 4, 2026 covers 14 Ohio counties, none of them Stark, Summit, Portage, Wayne or Tuscarawas. Those rules govern nurseries moving boxwood under compliance agreements, not what anybody does on a Saturday.

As for the hornet the internet still calls a murder hornet, USDA APHIS and Washington State declared it eradicated from the United States on December 18, 2024, after three years with no confirmed detection. The giant hornet banging on an Ohio window in October is a European hornet, a long established resident that gets mistaken for the headline every autumn.

If the thing you found turns out to be an ordinary Ohio pest looking for somewhere to spend the winter, that part is straightforward. Schedule an inspection through our request a quote page or call 330-494-6199, and we will tell you what is actually there, whether you are in North Canton or anywhere else in Stark, Summit, Portage, Wayne or Tuscarawas County.