Household Critters - Home and Garden IPM from Cooperative Extension - University of Maine Cooperative Extension

Photo Gallery: Household Pests and Critters

: American Cockroach (female)

: American Cockroach (female)

: Bed Bugs (various instar stages; two smaller nymphs [top of photo] and two adults [lower right])

: Bed Bugs (left: male; right: female) (4/26/2023)

: Bed Bug (adult female)

: Blow Fly

: Blow Fly

: A species of booklice (possibly Trogium pulsatorium)

: A species of booklice resting at the edge of a glass petri dish (closer view of the same specimen is shown in the adjacent image at right)

: Brown-banded Cockroaches (female: left; male: right)

: Camel Cricket

: Carpenter Ant (Winged Queen)

: Carpenter Ant (Winged Queen)

: A male Carpenter Ant

: Carpenter Ants (workers)

: A pair of Black Carpet Beetles and two carpet beetle larvae

: Cellar Spider (female with egg sac)

: Cluster Fly

: Drain Fly (additional example)

: Drugstore Beetle (Stegobium paniceum) (Alton, Maine; 8/2/2021)

: Drugstore Beetles (Stegobium paniceum) taken from a kitchen counter (with a penny for size comparison) (Alton, Maine; 8/2/2021)

: Drugstore Beetles (Stegobium paniceum) (Alton, Maine; 8/2/2021)

: Earwigs

: Eastern Boxelder Bug (Boisea trivittata) (adult stage) (Hallowell, ME; 4/19/2021)

: Eastern Boxelder Bug (Boisea trivittata) (adult stage) (Hallowell, ME; 4/19/2021)

: Eastern Parson Spider

: Banded Fishing Spider (Dolomedes vittatus) (Etna, ME; 3/21/2019)

: Fleas (Cat Flea shown here)

: Flour Beetles

: Four-lined Silverfish (Ctenolepisma lineatum)

: Red-eyed Fruit Fly (melanogaster Meigen) (close-up view)

: Dark-winged Fungus Gnats (Family Sciaridae) captured on a yellow sticky card placed in the pot of a houseplant (they are drawn to light and also to the color of yellow)

: Closeup view of a fungus gnat (this particular specimen belongs to the genus called Trichonta) (Cape Elizabeth, ME; 11/27/2021)

: German cockroach (female) (Blattella germanica)

: Grain beetle (adult and larva/grub)

: House Fly

: Pantry Moths / Flour Moths (Plodia interpunctella) (plus larvae and the webbing that the larvae spin, shown with one of their more unusual food sources: rodenticide pellets)

: A mature Pantry Moth / Flour Moth (Plodia interpunctella) larva with some of its silk webbing that they spin (you can see the webbing between the larva and the coin)

: Pantry Moth / Flour Moth (Plodia interpunctella)

: Pantry Moth / Flour Moth (Plodia interpunctella)

: Jumping Spider

: Larder Beetle larva

: Larder Beetle (Dermestes lardarius)

: Larder Beetle (Dermestes lardarius)

: Lesser Grain Borers

: Meal Moth (Pyralis farinalis) (central Maine; 5/3/2021)

: Meal Moth (Pyralis farinalis) (resting on a bathroom wall with its abdomen curved up and out for more effective pheromone dispersal; central Maine; 5/10/2021)

: Meal Moth (Pyralis farinalis) (central Maine; 5/11/2021)

: Mealworms
(larvae and adults)

: Millipede

: Multicolored Asian Lady Beetle

: Group of Multicolored Asian Lady Beetles (adults move indoors in search of warm places to spend the winter)

: Pavement Ants

: Powderpost Beetle

: Silverfish

: Sowbug

: Tanbark Borer / Violet Tanbark Beetle (Phymatodes testaceus) (Cape Elizabeth, ME; 5/4/2023) (Photo courtesy of MB)

: Termites (very rare in Maine)

: Termite (soldier)

: Termites (workers)

: Termites (winged reproductives)

: Termite reproductives who have lost their wings; they break off their wings a short time after swarming and mating.

: Ticks (ticks are often found indoors after hitching a ride on a person or a family pet)

: Two-Spotted Spider Mites

: Varied Carpet Beetle (Anthrenus verbasci) next to a U.S. penny for scale purposes (specimen from Orono, ME; 5/3/2023)

: Varied Carpet Beetle (Anthrenus verbasci) (magnified view; playing dead as they are apt to do)

: Western Conifer Seed Bug

: Whiteflies (adults with wings, immatures, and black/dead ones due to parasitism)

: Winter Firefly (Ellychnia corrusca) (5/3/2011; Etna, ME)

: Winter Firefly (Ellychnia corrusca) (5/3/2011; Etna, ME)

: Example of a wood roach (Dusky Cockroach, Ectobius lapponicus) (male) (Stetson, Maine; 7/13/2015)

: Example of a wood roach (Tawny Cockroach, Ectobius pallidus) (male) (Acadia National Park, Maine; 10/11/2009)

Additional Photos and Information: American Cockroach Ants Bed Bugs Blow Flies and Flesh Flies Booklice Boxelder Bugs (BugGuide.net) See also: Boxelder Bugs (Univ. of Minnesota Extension) (they come inside accidentally or in search of a warm location in which to spend the winter) Brown-banded Cockroach