Fly

Fly (Pupa or Larva)

Varies widely by species within the order Diptera, e.g., Musca domestica (house fly), Calliphora vomitoria (bluebottle f...

Black soldier fly

Hermetia illucens

Drain Fly Larva

Psychodidae

Hoverfly (also known as Flower Fly or Syrphid Fly)

Syrphidae (family)

Fly (likely a House Fly or similar Muscid)

Likely Musca domestica (House Fly), but could be another species within Muscidae or a related family.

Fly Larva (Maggot)

Diptera (Suborder Brachycera)

Blue Bottle Fly

Calliphora vomitoria

Drain Fly Larva

Psychodidae

Red Flour Beetle

Tribolium castaneum

Smooth Spider Beetle

Gibbium aequinoctiale

Smooth Spider Beetle

Gibbium aequinoctiale

Whitefly

Aleyrodidae

Human Lice

Pediculus humanus

Ground Beetle

Carabus violaceus

Unknown Beetle / Arthropod (Identification uncertain due to blur)

Coleoptera (Order)

Fly Larva (Maggot)

Family Muscidae, Calliphoridae, or similar

Booklouse (or Psocid)

Liposcelis spp.

Ground Beetle (possibly a species of Lebiini or Agonum)

Family Carabidae

Louse (Head Louse)

Pediculus humanus capitis

Booklouse

Liposcelis spp.

Booklouse

Liposcelis spp.

Booklouse (Psocid)

Liposcelis spp.

Predaceous Diving Beetle

Family Dytiscidae

Rat-tailed Maggot

Eristalis tenax (larva)

Bird Dropping (often confused with insects/larvae)

Aves excrementum

Moth fly (also known as Drain fly)

Psychodidae

Fruit fly or House fly pupa (casing)

Diptera (unidentified genus/species)

Fruit Fly (specifically Tephritid fruit fly)

Anastrepha spp.

Moth fly larva (Drain fly larva)

Psychodidae (larvae)

Ant-mimic fly (Thick-headed fly)

Physocephala sp.

American Carrion Beetle

Necrophila americana

Fruit Fly (or possibly other small fly)

Drosophila melanogaster (for common fruit fly, though exact species is hard to determine from image)

Fly Larva (Maggot)

Brachycera (Suborder)

Human Lice (Head, Body, or Pubic)

Pediculus humanus or Pthirus pubis

Ground Beetle

Carabidae

Cockroach

Blattodea (Order, various species)

Louse (Head louse)

Pediculus humanus capitis

Thrips

Thysanoptera (Order name)

Red Flour Beetle

Tribolium castaneum

American Cockroach (droppings/frass)

Periplaneta americana

Smooth Spider Beetle

Gibbium aequinoctiale

Head louse (nits/eggs)

Pediculus humanus capitis