streamwatch reference collection

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(All photos by Bob Henricks unless otherwise noted.)

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Small Minnow Mayfly

Small Minnow Mayfly, lateral view

Brushlegged Mayfly

Brushlegged Mayfly, dorsal view (note hairy forelegs and meshed hair in tails)

Ameletid Mayfly

Ameletid mayfly, dorsal view

Flatheaded Mayfly

Flatheaded Mayfly, genus Epeorus (note two tails, not three)

Spiny Crawler Mayfly

Spiny Crawler gills

Spiny Crawler Mayfly, genus Drunella (note “muscular forearms”)

Little Stout Crawler, note triangular operculate gills

Small Squaregill Mayfly (note square operculate gills)

Pronggilled Mayfly

Common Burrower Mayfly

Armored Mayfly

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Common Stonefly, genus Paragnetina

Common Stonefly, genus Eccoptura

Common Stonefly, lateral gills (“hairy armpits”)

Perlodid Stonefly

Large Winter Stonefly, genus Taeniopteryx

Large Winter Stonefly, genus Strophopteryx

Small Winter Stonefly

Small Winter Stonefly, distinctive wingpads

Giant Stonefly

Giant Stonefly, thoracic gills

Green Stonefly

Nemourid Stonefly, note cervical gills

Roach-like Stonefly

Rolled-winged Stonefly

Rolled-winged Stonefly, photo by Rose Brown

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Freeliving Caddisfly

Fingernet Caddisfly

Trumpetnet Caddisfly

Common Netspinner

Common Netspinner Pupa

Saddlecase Maker Caddisfly

Saddlecase Maker, out of case

Uenoid Caddisfly

Uenoid Caddisfly, out of case

Strong Casemaker Caddisfly

Micro Caddisfly

Lepidostomatid Caddisfly

Lepidostomatid Caddisfly, out of case

Humpless Caddis, Case Type A

Humpless Caddisfly, Case Type B

Humpless Caddisfly, Case Type C

Giant Casemaker Caddisfly (live), photo by Rose Brown

Giant Casemaker Caddisfly, preserved

Giant Casemaker Caddisfly, head (note abdominal gills)

Northern Casemaker, Case Type A

Northern Casemaker, out of case

Northern Casemaker, Case Type B

Northern Casemaker, Case Type C

Longhorned Casemaker, Case Type A

Longhorned Casemaker, Case Type B

Longhorned Caddisfly, out of case

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Clubtail Dragonfly

Darner Dragonfly

Darner Dragonfly, labrum (ventral view)

Spiked-Tail Dragonfly

Emerald Dragonfly (Skimmer)

Broadwinged Damselfly (live), photo by Rose Brown

Broadwinged Damselfly (preserved)

Narrowwinged Damselfly

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Hellgrammite (live)

Baby Hellgrammite

Alderfly

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Water Penny, dorsal view

Water Penny, ventral view

Long-toed Beetle (Dryopid) adult

Riffle Beetle, adult

Riffle Beetle larva (note operculum)

Ptilodactylidae larva (note: no operculum, gills exposed)

Water Scavenger Beetle, Type A

Water Scavenger Beetle, Type B

Predaceous Diving Beetle

Whirligig Beetle

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Midge (note front and back prolegs)

Midge pupa

Hatching Midge

Dixid Midge

Netwinged Midges, dorsal and ventral views

Biting Midge, Type A

Biting Midge, head (no prolegs)

Biting Midge, Type B

Black Fly

Black Fly head, dorsal view

Black Fly pupa

Dance Fly

Horse/Deer Fly larva

Primitive Crane Fly

Crane Fly

Soldier Fly, photo by Rose Brown

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Pyralid Moth

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Crayfish in tray, photo by Rose Brown

Scud

Sowbug, side view

Sowbug, dorsal view

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Snails (Hydrobiid, Physid, Pleurocerid)

Physid snail (lunged)

Planorbid snail (lunged)

Hydrobiid snails (gilled)

Pleurocerid snail (gilled)

Asian clam