Durham, NC Pest Identification Library

What bug is that?

A visual guide to 44 pests found around Triangle homes. Photos, scientific names, habits and threat levels. Guides marked identification only cover pests Castle does not treat; bed bugs are inspection only.

Not sure what you're dealing with? Start with the size, the color, and where you spotted it — indoors near food and water usually points to roaches or ants, while wood shavings or hollow-sounding trim can mean termites or carpenter ants. Each pest below links to a full identification page with photos, habits, and what actually gets rid of it. If you're still not sure, or the pest is a wasp, hornet, or anything that stings, skip the guesswork — (919) 606-8686 — we'll identify it for free on your inspection visit.

Ants

10 guides

Trail-followers, scavengers, and structural nesters — from sugar ants to fire ants. The Triangle has an unusually diverse ant population, and species ID is the first step in choosing the right treatment.

Fire Ant identification illustration
High concern

Fire Ant

Solenopsis invicta

Aggressive reddish-orange ants with a painful stinging bite that builds dome-shaped mounds.

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Pharaoh Ant identification illustration
Moderate concern

Pharaoh Ant

Monomorium pharaonis

Tiny pale yellow ants that bud into new colonies when sprayed — never use repellent insecticides.

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Odorous House Ant identification illustration
Low concern

Odorous House Ant

Tapinoma sessile

Brown ants that smell like rotten coconut when crushed; love sweets and form wide foraging trails.

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Little Black Ant identification illustration
Low concern

Little Black Ant

Monomorium minimum

Jet-black, smaller than most household ants; nests in masonry and wall cavities with multiple queens.

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Thief Ant identification illustration
Low concern

Thief Ant

Solenopsis molesta

Tiny pale ants that nest beside other ant colonies and steal their brood; easy to confuse with pharaoh ants.

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Raspberry Crazy Ant identification illustration
Moderate concern

Raspberry Crazy Ant

Nylanderia fulva

Erratic-running reddish-brown ants that displace native ants, form supercolonies, and short out electronics.

Identification only

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Pavement Ant identification illustration
Low concern

Pavement Ant

Tetramorium immigrans

Dark brown ants that pile soil at sidewalk cracks; forage indoors for grease, sweets, and meats.

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Acrobat Ant identification illustration
Low concern

Acrobat Ant

Crematogaster spp.

Heart-shaped abdomen raised over the head when threatened; nests in moist wood and foam insulation.

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Harvester Ant identification illustration
High concern

Harvester Ant

Pogonomyrmex spp.

Large red ants of the western US with one of the most painful insect stings known to science.

Identification only

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Argentine Ant identification illustration
Moderate concern

Argentine Ant

Linepithema humile

Light-brown invasive ants that form vast supercolonies and displace native species.

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Cockroaches

3 guides

Allergen-spreading, fast-breeding kitchen and bathroom invaders. Durham's warm, humid summers keep roach populations active nearly year-round, especially near water and food sources.

Rodents

3 guides

Mice that chew wires, contaminate food, and squeeze through dime-sized gaps. Fall's first cool nights reliably push Triangle rodents indoors looking for warmth and shelter.

Flies & Flying Pests

4 guides

Houseflies, fruit flies, mosquitoes, cluster flies, cicadas — anything with wings and a buzz. Most breed in moisture or decaying organic matter that's easy to overlook.

Stinging Insects

3 guides

Yellow jackets, wasps, and hornets — painful, sometimes life-threatening. Correct species ID matters here more than almost any other pest category, since risk levels vary sharply.

Spiders

5 guides

From harmless cellar spiders to medically significant widows and recluses. Most Triangle spider sightings are the harmless end of that spectrum, but a few genuinely warrant caution.

Biting Pests

3 guides

Bed bugs, ticks, fleas — pests that feed on blood and cause itching, welts, or disease. Early identification keeps a small problem from becoming a much bigger one.

Occasional Invaders

7 guides

Silverfish, earwigs, stink bugs, centipedes — sneak in when weather changes. They're rarely destructive, but large numbers usually point to an exterior gap worth sealing.

Wood-Destroying

3 guides

Subterranean termites, carpenter ants, and borer beetles — silent structural damage. NC State Extension entomology guidance points to an annual inspection for homes in our region.

Fabric & Pantry

3 guides

Clothes moths and pantry moths that ruin garments and contaminate dry goods. Both are more common in Durham homes than most people expect, especially in closets and pantries.

From identification to next steps

German or American cockroach?Compare the signs before choosing a treatment. Recognize the signs of termitesLearn what to look for around a Durham home. Prepare for mosquito seasonFind practical steps for your Triangle yard.

Can't ID it?

Send us a photo — we'll identify it free.

Castle Exterminators is family-owned and based in Durham. We've been identifying and treating Triangle pests since 2011. Get a free in-person inspection or just text us a clear photo.