New York is home to a wide range of insects and pests, from cockroaches in apartment kitchens to ticks in suburban parks and invasive species reshaping the landscape. What you’ll encounter depends on where you are in the state, the time of year, and whether you’re indoors or out. Here’s a practical guide to the bugs New Yorkers deal with most.
German Cockroaches: The Most Common Indoor Pest
The German cockroach is the single most common cockroach species in homes, apartments, restaurants, and hotels across the United States, and New York City is no exception. Adults are small, only about half an inch to five-eighths of an inch long, tan to light brown, with two dark parallel lines running from the back of the head to the wings. They prefer warm, humid spaces and are most often found in kitchens near dishwashers, stoves, and sinks, and in bathrooms.
During the day, German cockroaches hide in cracks, crevices, and other dark spots. You’re most likely to spot them at night when you flip on a light. In heavy infestations, their secretions produce a noticeable, musty odor in the affected area. Four other cockroach species also turn up in New York (the brown-banded, Oriental, American, and Pennsylvania wood cockroach), but the German cockroach is by far the most frequent apartment invader.
Bed Bugs and How to Report Them
Bed bugs remain a persistent problem across all five boroughs. These small, flat, reddish-brown insects hide in mattress seams, bed frames, and furniture during the day and feed on blood at night. The telltale signs are itchy red welts (often in lines or clusters), tiny dark spots on bedding from their droppings, and shed skins near hiding spots.
If you’re a tenant in New York City and discover bed bugs, you can file a complaint through 311. The Department of Housing Preservation and Development (HPD) will attempt to contact your building’s managing agent to advise them a complaint has been filed and that a violation may be issued if the problem isn’t corrected immediately. If the situation isn’t resolved, HPD sends a uniformed code enforcement inspector to your building. Building owners who fail to act can be ticketed. You need to provide your contact information when filing, and you must be a tenant in the building to report.
Your Landlord’s Legal Responsibility
Under New York law, tenants have the right to a livable, safe, and sanitary apartment. This right is implied in every residential lease, whether written or oral, and any lease provision that tries to waive it is void. Landlords of multiple dwellings are required to keep apartments and public areas in good repair and free of vermin, garbage, and other offensive material. Not ridding an apartment of an insect infestation is specifically cited as a potential violation of a tenant’s rights.
If a landlord fails to address a pest problem, tenants can sue for a rent reduction. Rent-regulated tenants can also file a rent-reduction complaint with the Division of Housing and Community Renewal. Some tenants choose to withhold rent, though landlords may respond with a nonpayment lawsuit, at which point the tenant can countersue for breach of the warranty of habitability.
Mosquitoes and West Nile Virus
Mosquito season in New York City runs from June through October, with peak activity in August and September. Mosquitoes carrying West Nile virus are present in the city every year during this window. Most people who contract West Nile virus experience no symptoms or mild flu-like illness, but in rare cases it can cause serious neurological disease, particularly in older adults.
The city operates one of the most comprehensive mosquito surveillance programs in the country. From spring through fall, trained staff collect mosquitoes from hundreds of locations across all five boroughs each week. The insects are grouped into pools and tested for West Nile virus. When detection rates spike, the Health Department expands control efforts, including targeted spraying in affected areas. To reduce your own risk, eliminate standing water around your home (even a bottle cap’s worth can breed mosquitoes), use EPA-registered repellent, and wear long sleeves during dawn and dusk when mosquitoes are most active.
Ticks and Lyme Disease
The blacklegged tick, also called the deer tick, is the primary disease-carrying tick in New York State. These ticks can transmit the pathogens responsible for Lyme disease, anaplasmosis, babesiosis, hard tick relapsing fever, and Powassan encephalitis. The New York State Department of Health maps tick risk by region on a scale of 0 to 5, with higher scores indicating a greater chance of encountering an infected tick.
Risk varies significantly by geography. The Hudson Valley, Long Island, and parts of upstate New York tend to have higher tick densities than the concrete-heavy core of Manhattan, but ticks have been found in city parks and green spaces as well. If you spend time in grassy or wooded areas, check your body thoroughly afterward, paying close attention to the scalp, behind the ears, underarms, and groin. Removing a tick within 24 to 36 hours significantly reduces the chance of Lyme transmission.
Spotted Lanternfly: The Newest Invader
The spotted lanternfly has become one of the most visible invasive insects in the New York City area. Originally from Asia, it was first detected in the U.S. in Berks County, Pennsylvania, in 2014. The first New York sighting came in 2017, when a dead adult was found in Delaware County. By 2018, adults or egg masses had turned up in Brooklyn, Albany, Westchester, Suffolk, and several other counties, though these were thought to be hitchhikers rather than established populations.
Established populations took hold on Staten Island and near Ithaca by 2020, and by 2021 they had expanded across the NYC region, Long Island, the lower Hudson Valley, and near Binghamton. The insects feed on the sap of more than 70 plant species, including grapevines, fruit trees, and hardwoods, leaving behind a sticky residue called honeydew that promotes mold growth. Quarantine efforts have been moderately effective in slowing the spread but have not contained it. If you see spotted lanternflies or their distinctive mud-like egg masses on trees, outdoor furniture, or vehicles, you can report them to New York’s Department of Agriculture and Markets.
Asian Longhorned Beetle
The Asian longhorned beetle is a destructive wood-boring insect that was first found infesting Norway maple trees in Brooklyn in 1996. Larvae and pupae likely arrived from China inside wooden packing material shipped through New York Harbor. After that initial discovery, additional infestations were identified in Manhattan, Queens, Staten Island, Islip, and central Long Island.
Eradication has been a slow, tree-by-tree process. To date, the Manhattan, eastern Queens, Staten Island, and Islip infestations have been successfully eradicated. Quarantine zones remain around other infested areas, and it’s illegal to move firewood or other regulated materials out of those zones. International standards now require wooden packing materials to be chemically treated or kiln-dried before shipping, which helps prevent new introductions. The beetles are large (about an inch long), glossy black with white spots, and have long, banded antennae. If you spot one, report it to your local Department of Environmental Conservation office.
Seasonal Patterns at a Glance
Indoor pests like cockroaches and bed bugs are year-round problems in New York, though cockroach activity tends to increase in warmer months when breeding accelerates. Mosquitoes are active from June through October, peaking in late summer. Ticks are most dangerous from April through November, with nymph-stage ticks (the ones most likely to transmit Lyme disease) peaking in late spring and early summer. Spotted lanternflies are most visible as adults from July through December, when they feed, mate, and lay egg masses that overwinter on trees, rocks, and outdoor surfaces.
Knowing which bugs are active and when helps you take the right precautions, whether that means checking for ticks after a hike in the Hudson Valley, stomping spotted lanternflies on a Brooklyn sidewalk in September, or filing a 311 complaint the moment you notice signs of bed bugs in your apartment.