Not a bug (likely Salt, Sugar, or Mineral Residue)

Sodium Chloride (if salt), Sucrose (if sugar), or Calcium Carbonate (if scale)

Not a bug/insect

N/A

Horsehair Worm (also known as Gordian Worm)

Gordius robustus (and other species within the Phylum Nematomorpha)

Silverfish

Lepisma saccharinum

No identifiable insect present

N/A

Lint / Debris (Not an Insect)

Gossypium debris (colloquial placeholder, not actually an organism)

Plaster Bagworm (or Household Casebearer)

Phereoeca uterella

Silverfish

Lepisma saccharinum

Not a Bug (Likely Dried Skin, Scab, or Resin)

N/A

Flea Larva

Ctenocephalides felis (Most likely, the Cat Flea)

It cannot be identified as an insect

N/A

Dog Tick (American Dog Tick)

Dermacentor variabilis

Unidentifiable Object (Likely a Stain or Dirt)

N/A

Not a Bug (Scab or Skin Flake)

N/A (Biological detritus)

Household Casebearer (also known as the Plaster Bagworm)

Phereoeca uterella

Soft Tick (likely Bat Tick or similar genus)

Carios kelleyi (Bat Tick) or within the Argasidae family

Non-Insect Object (Likely skin flake or fabric residue)

N/A (Inanimate object)

Skin Flake / Debris (Not an insect)

N/A (Likely desquamated epithelium)

Unknown/Unidentifiable (Likely Debris, Styrofoam, or Fungal Matter)

N/A

Freshwater Hydra

Hydra sp. (likely Hydra vulgaris or similar)

Not a bug (Debris/Lint)

N/A

Aphid

Aphidoidea (Superfamily)

Not an insect (likely mucus, biofilm, or plant debris)

N/A

Shark Tooth (This is not an insect)

N/A (Fossilized or modern Selachimorpha tooth)

Not a bug (Debris / Dry Skin / Dandruff)

N/A (Inorganic matter or biological detritus)

Not a bug (likely biological debris or scab)

N/A

Mold Mite (also Tyrophagus Mite or Cheese Mite)

Tyrophagus putrescentiae

Booklice

Liposcelis spp.

Booklice (Barklice)

Liposcelis spp.

Fruit Fly (Vinegar Fly)

Drosophila melanogaster

Drugstore Beetle / Cigarette Beetle

Stegobium paniceum / Lasioderma serricorne

Flat Grain Beetle

Cryptolestes pusillus

Boxelder Bug

Boisea trivittata

Carpet Beetle Larva

Anthrenus verbasci (typically Varied Carpet Beetle)

Carpet Beetle (likely Black Carpet Beetle)

Attagenus unicolor

Silverfish

Lepisma saccharina

Not an Insect (Fiber/Debris)

N/A

Fungus Gnat Larva / Fungus Gnat Maggot

Sciaridae or Mycetophilidae (Family)

Silverfish

Lepisma saccharina

Unidentifiable Object (Likely Gravel or Debris)

N/A

Dust Mite (or similar microscopic mite)

Dermatophagoides spp. (e.g., Dermatophagoides farinae or Dermatophagoides pteronyssinus)

Lint / Thread / Human Hair (Not a living organism)

N/A (Inanimate object)