← Pest Organisms

Spring / season

15 entr(ies)

Argentine Ant
A tiny dull-brown invasive ant that forms enormous multi-queen "supercolonies" and follows long indoor trails to sweets and water, especially when the weather turns wet or hot and dry.
Bald-faced Hornet
A large black-and-white social wasp, despite its name a kind of yellowjacket, that builds a gray, pear-shaped paper nest hung in trees or under eaves and defends it aggressively when disturbed.
Black Carpenter Ant
A large, dull-black ant that nests in moist or decaying wood, tunneling galleries to build its colony rather than eating the wood like a termite.
Blacklegged Tick
A small, dark-legged tick of the eastern and north-central United States that feeds on mammals and birds and is the main carrier of the Lyme disease bacterium.
Cat Flea
A tiny, wingless, blood-feeding insect that is the flea most often found on pet cats and dogs in U.S. homes, biting both animals and people and breeding in carpets, bedding, and pet resting areas.
Clover Mite
A tiny reddish-brown plant-feeding mite, recognized by an extra-long front pair of legs, that lives on lawns and ornamentals and pours into buildings in large numbers during spring and cool spells, harmless but prone to leaving red stains when crushed.
Common Pillbug
A small, gray, land-dwelling crustacean that rolls into a tight ball when disturbed, lives in damp soil and leaf litter, and feeds harmlessly on decaying plant material.
Eastern Subterranean Termite
A soil-dwelling, wood-eating social insect that is the most widely distributed termite species in the eastern United States and a major structural pest.
Little Black Ant
A tiny, shiny jet-black ant native to North America that nests in soil and inside structures, follows visible foraging trails indoors, and turns up in kitchens and pantries hunting for food and a little moisture.
Northern House Mosquito
A small, light-brown mosquito of the northern United States and southern Canada that breeds in stagnant, organically rich water and is the region's main carrier of West Nile virus.
Norway Rat
A large, stocky burrowing rodent that nests at ground level in and around buildings, contaminates food, gnaws structures, and can carry diseases that affect people.
Odorous House Ant
A tiny brown-to-black household ant that gives off a sharp, rotten-coconut smell when crushed and trails indoors after sweets, especially in damp weather.
Oriental Cockroach
A large, dark, slow-moving cockroach that favors cool, damp places like basements, drains, crawl spaces, and outdoor foundation areas, and is often called a "waterbug."
Pavement Ant
A small dark-brown to black ant that nests in soil along cracks in sidewalks, driveways, and foundations and wanders indoors after crumbs, sweets, and grease.
Red Imported Fire Ant
An aggressive, stinging, reddish-brown ant from South America that builds dome-shaped soil mounds across the southern U.S. and swarms to sting when its nest is disturbed.