Aquatic Insect

Caddisfly larva (case-making)

Trichoptera (larva stage)

Drain Fly Larva (Psychodidae)

Psychoda spp. (larva)

Midge

Chironomidae

Crane Fly

Tipula species (or other genera within Tipulidae)

Flat-headed Mayfly Nymph (top right), Aquatic Sowbug (middle), Caddisfly Larva (bottom)

Heptagenia (top right), Asellus aquaticus (middle), Trichoptera (bottom)

Caddisfly

Various species within the order Trichoptera (e.g., Limnephilus spp., Hydropsyche spp.)

It is difficult to determine the exact common name due to the condition of the specimen, but it appears to be a heavily ...

Unidentifiable due to the condition of the specimen.

Horsehair worm

Gordius aquaticus (example species, identification to species level from image is difficult)

Non-biting Midge

Chironomidae (family)

No-see-um

Family Ceratopogonidae

Case-bearing insect larva (potentially Caddisfly larva or Case-bearing Clothes Moth larva)

Difficult to determine precisely from the image. Could be from various genera within Trichoptera (caddisflies) or Tineol...

Horsehair Worm

Gordius robustus (and other Chordodidae/Gordiidae species)

Stonefly

Plecoptera (Order level)

Dragonfly

Anisoptera (Suborder)

Horsehair worm

Phylum Nematomorpha

Water Bug (likely a species of Lesser Water Boatman)

Corixidae (Family)

Backswimmer (or possibly a Water Boatman due to blur)

Notonecta spp. (Family Notonectidae)

Giant Water Bug (Toe-Biter)

Lethocerus americanus

Drain Fly Larva

Psychodidae family (typically Psychoda spp.)

Fungus Gnat

Various genera and species, e.g., Bradysia spp. (Sciaridae), Mycetophila spp. (Mycetophilidae)

Drain fly larva

Psychodidae (family level)

Dragonfly

Odonata (Anisoptera)

Drain Fly Larvae

Psychodidae (larvae)

Caddisfly Larva

Trichoptera (larva)

Drain Fly Larva (sometimes improperly called Moth Fly Larva)

Clogmia albipunctata (most common urban species)

Drain Fly Larva

Psychodidae (family)

Mosquito larva (Wriggler)

Family Culicidae (larval stage)

Horsehair Worm (also known as Gordian Worm)

Gordius species (Phylum Nematomorpha)

Crane Fly

Tipulidae (various genera and species)

Crane Fly

Tipulidae

Gnat (likely Biting Midge or Sand Fly)

Varies significantly by species (e.g., Ceratopogonidae for biting midges, Psychodidae for sand flies)

Drain Fly Larva (also known as Moth Fly Larva or Sewer Gnat Larva)

Psychoda spp. / Clogmia albipunctata

Dragonfly

Infraorder Anisoptera

Non-biting Midge (Chironomid)

Chironomidae (family)

Dragonfly (General Identification)

Anisoptera (Suborder)

Horsehair Worm (also known as Gordian Worm)

Gordius sp. (part of the Phylum Nematomorpha)

Crayfish (possibly a Red Swamp Crayfish)

Procambarus clarkii

Drain Fly Larva

Psychoda spp. (often Clogmia albipunctata)

Dragonfly

Various (an order, not a single species)

Freshwater Hydra

Hydra sp. (likely Hydra vulgaris or similar)

Flatworm

Platyhelminthes (class Turbellaria, order Tricladida for freshwater planarians)

Crane Fly Larva (Leatherjacket)

Tipula species (Larva)