Common Pests in the Mid-Atlantic
The Mid-Atlantic region experiences moderate to high pest pressure with clearly defined seasonal transitions. Dense suburban development and aging housing stock create ideal harborage for termites, cockroaches, and rodents. The region has become ground zero for the brown marmorated stink bug invasion and faces increasing tick-borne disease risks.
Humid subtropical to humid continental climate with hot, muggy summers and cold, wet winters; moderate rainfall distributed throughout the year.
Seasonal Pest Activity
spring
Eastern subterranean termites produce swarmer flights on warm, rainy days. Carpenter ants establish colonies in damp fascia boards, window frames, and deck posts. Ticks emerge early, with blacklegged ticks posing Lyme disease risk in suburban and rural areas. Ants begin foraging trails into kitchens and pantries.
summer
Mosquitoes breed in containers, gutters, and drainage ditches throughout the region. Yellowjackets build nests in wall voids, underground, and in playground equipment. Carpenter bees bore into unpainted wood trim. Fleas and ticks are active in yards, parks, and wooded edges. Cockroach complaints increase in multifamily housing.
fall
Brown marmorated stink bugs invade structures by the thousands in September and October. Lady beetles, boxelder bugs, and cluster flies pile up on south-facing walls. Rodents aggressively seek indoor shelter. Yellowjackets become extremely defensive as colonies decline.
winter
Mice and rats are the top service call driver in winter. German cockroaches persist in heated buildings. Overwintering stink bugs and lady beetles emerge during warm spells, frustrating homeowners. Bed bug activity remains consistent in hotels and multifamily housing.
Top Pests in the Mid-Atlantic (86)
These pests are commonly encountered across Virginia, Maryland, Delaware, District of Columbia, and more.
Red Imported Fire Ant
Solenopsis invicta
Originally from South America, the Red Imported Fire Ant is one of the most economically damaging invasive pests in the southern United States.
Pavement Ant
Tetramorium caespitum
Pavement Ants are among the most common ant pests in the northeastern and midwestern United States.
Acrobat Ant
Crematogaster spp.
Acrobat Ants are cavity-nesting ants that commonly inhabit moisture-damaged wood and abandoned insect galleries in structures.
Little Black Ant
Monomorium minimum
The Little Black Ant is one of the most common and widespread ant species in the eastern United States.
Field Ant
Formica spp.
Field Ants are a large genus with many species across North America.
Oriental Cockroach
Blatta orientalis
The Oriental Cockroach is a dark, sluggish species associated with damp, cool environments.
Smokybrown Cockroach
Periplaneta fuliginosa
The Smokybrown Cockroach is a large peridomestic species common in the southeastern United States.
Pennsylvania Wood Cockroach
Parcoblatta pennsylvanica
The Pennsylvania Wood Cockroach is a native species that lives in forests under bark, in leaf litter, and in woodpiles.
Eastern Subterranean Termite
Reticulitermes flavipes
The Eastern Subterranean Termite is the most common and economically important termite in the United States, responsible for billions of dollars in structural damage annually.
Formosan Subterranean Termite
Coptotermes formosanus
The Formosan Subterranean Termite is the most destructive termite species in the United States.
Dark Southeastern Subterranean Termite
Reticulitermes virginicus
The Dark Southeastern Subterranean Termite is the second most common subterranean termite in the eastern United States.
Southeastern Drywood Termite
Incisitermes snyderi
The Southeastern Drywood Termite is the primary drywood termite species in the southeastern United States.
Southern Black Widow
Latrodectus mactans
The Southern Black Widow is the most recognized venomous spider in North America.
Northern Black Widow
Latrodectus variolus
The Northern Black Widow is found in the northeastern and midwestern United States, overlapping with the Southern species in the mid-Atlantic.
Asian Tiger Mosquito
Aedes albopictus
The Asian Tiger Mosquito is an invasive species that has spread across the eastern United States since the 1980s.
Common House Mosquito
Culex pipiens
The Common House Mosquito is the most abundant mosquito in urban and suburban areas of the northern United States.
+70 more pests common in this region
States in This Region
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