Pest Library

Successful pest control starts with identifying the problem. The Pest Library is your go-to resource for quickly and accurately identifying what’s invading your space. Browse common pests in Illinois and Wisconsin and select an image to learn more. With clear descriptions, detailed images, and key identifying features, you’ll be able to distinguish between similar-looking species and understand the risks they pose.

Still unsure? Give Revolution Pest Defense a call or send an email for a free inspection. 

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Field Mouse
brown mouse laying in snow.
House Mouse
Norway rat on concrete.
Norway Rat
Grey short tailed shrew resting in dry grass and dirt.
Shrew
Vole standing on a concrete surface.
Vole
Yellowjacket wasp resting on a green leaf of a plant.
Yellowjacket
bald faced hornet
Bald-Faced Hornet
Two yellow and black wasps upside down on a small hanging paper nest.
Paper Wasp
Black and yellow mud dauber hanging on purple flower buds.
Black and Yellow Mud Dauber
Iridescent blue and black wasp resting on fallen log.
Blue Mud Dauber
Orange and black wasp resting on three small white flowers.
Great Golden Digger Wasp
large black wasp resting upside down on a cluster of small yellow flowers.
Great Black Wasp
black wasp on fallen brown leaves
Spider Wasp
large red wasp with black and yellow abdomen on top of an overturned cicada.
Cicada Killer Wasp
black wasp with thin waist resting on composite flower buds
Grass Carrying Wasp
honey bee taking pollen from a gray nickerbean plant
Honey Bee
yellow and black bumblebee resting on a cluster of pinkish purple flowers.
Bumble Bee
black and yellow carpenter bee entering a round opening in a wooden post
Carpenter Bee
red mason bee resting on worn wooden fence
Mason Bee
mining bee
Mining Bee
Two large black ants on a stick.
Carpenter Ant
Brown ant on a sandy surface.
Pavement Ant
Brownish black ant on a green leaf.
Odorous House Ant
Two shiny black ants on a pink flower petal.
Field Ant
Brown ant with a heart shaped abdomen climbing the stem of a green plant.
Acrobat Ant
Black ant with reddish thorax resting on a green leaf.
Smaller Carpenter Ant
Small yellow ant on a white background under low lighting.
Pharaoh Ant
Small yellow ant on a white granite countertop.
Thief Ant
Several orange ants on a dirt substrate.
Citronella Ant
German cockroach feeding on another dead cockroach.
German Cockroach
American cockroach on a grey background.
American Cockroach
Black oriental cockroach on a brown substrate surrounded by nymphs and small ants.
Oriental Cockroach
Golden cockroach on decomposing wood.
Wood Cockroach
House fly resting on a crosshatch pattern.
House Fly
Iridescent green blow fly on a leaf.
Blow Fly
Flesh fly resting on green leaf.
Flesh Fly
Fly with golden hairs on thorax resting on a green leaf.
Cluster Fly
Red fruit fly resting on yellowish green surface.
Fruit Fly
Dark eyed fruit fly resting on gray surface.
Dark-Eyed Fruit Fly
Phorid fly on a green leaf.
Phorid Fly
Drain fly resting on a green leaf.
Drain Fly
Fungus gnat resting on a green plant.
Fungus Gnat
Midge resting on a napkin.
Midge
Crane fly resting on a green leaf.
Crane Fly
Mosquito attempting to bite through fabric.
Mosquito
Stink bug resting on a white surface.
Brown Marmorated Stink Bug
Box elder bug resting on a brown surface.
Box Elder Bug
Asian lady beetle resting on a green plant.
Asian Lady Beetle
Western conifer seed bug resting on a painted gray surface.
Western Conifer Seed Bug
Indian meal moth resting on bark.
Indian Meal Moth
Cigarette beetle resting in debris.
Cigarette Beetle
Drugstore beetle on a white background.
Drugstore Beetle
Red flour beetle feeding on a pale yellow morsel of food.
Red Flour Beetle
confused flour beetle
Confused Flour Beetle
Sawtoothed grain beetle on white debris.
Sawtoothed Grain Beetle
Wolf spider on a white sandy surface.
Wolf Spider
Orange spider with gray abdomen on a tan substrate.
Woodlouse Spider
Yellow sac spider descending from a silk strand onto a dark surface.
Yellow Sac Spider
Spider hanging from a web in front of a light brown background.
Cellar Spider
Curled up common house spider hanging in front of a light tan background.
Common House Spider
Grey jumping spider on a wooden surface.
Jumping Spider
Cross orb weaver spider resting on a web on a blue background.
Orb Weaver Spider
Brown recluse spider on a black background.
Brown Recluse Spider
A black widow spider in a web.
Black Widow Spider
House centipede on a dark blue background.
House Centipede
Millipede on cement.
Millipede
Two pill bugs on dirt.
Pill Bug
European ear wig resting on the edge of a green leaf.
Earwig
House cricket on a white tiled floor.
House Cricket
Pale camel cricket on dry grass and dirt.
Camel Cricket
Silverfish resting on a white surface.
Silverfish
Five red mites on a white flower petal.
Sidewalk Mite
Springtail on a white background.
Springtail
Shiny black ground beetle in grass.
Ground Beetle
Larder beetle on a off white granite countertop.
Larder Beetle
Reddish brown june beetle on a white mesh fabric.
June Beetle
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