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PowerPoint like a dichotomous key for identifying macro-invertebrates

PowerPoint like a dichotomous key for identifying macro-invertebrates



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    ThinkyDinks ThinkyDinks Presentation Transcript

    • Instructions• Click the words that describe the macroinvertebrate until you have reached a picture that is the macroinvertebrate you found.
    • ShellNo shell
    • Double shellSingle shell
    • Small, whitish, tan or brownLarge, 2-8 inches, dark-color
    • Freshwater Muscle
    • Finger Nail or Pill Clam
    • Spiral opening on leftSpiral opening on rightCoiledConical
    • Pouch Snail
    • Gilled Snail
    • Orb Snail
    • Limpet
    • LegsNo legs
    • With tentacles brushes or “tails”Worm likeMicroscopic
    • Apostrophe-shapedRoundSwims with a jerk using antennas
    • Cydops or Copepod
    • Seed and Clam Shrimp
    • Water Flea or Daphnia
    • Suckers expands and contrasts bodysegmentedReddish brown body segmentedGlides along bottom body not segmentedTan or brown, longBody with bristles no suckersDistinct head, red green or tan, twistsSmall, hair like swims in “s” shape
    • Leech
    • Tubifex Worm
    • Flat Worm or Planaria
    • Horsehair Worm
    • Bristle Worm
    • Midge Larva
    • Nematode or Threadworm
    • Long breathing tubeTwo fringed “tails”Smooth, “stiff”, small headedLarge, gray with tentaclesWhite or gray with tentaclesBig “headed”, activeBlack, attaches to hard surfaces
    • Rat Tailed Maggot Larva
    • Water Snipe Fly Larva
    • Horse fly Larva
    • Cranefly Larva
    • Cranefly Larva
    • Midge Pupa
    • Black fly larva
    • 10+legs4 pairs of legs3 pairs of legs
    • Lobster likeShrimp-like, swims on sideWalks on bottom
    • Scud or Amphipod
    • Crayfish
    • Aquatic Sowbug or Isopod
    • Tiny often brightly coloredRuns on top of water
    • Water Mite
    • Fishing spider
    • WingsNo wings
    • Beetle-like, wings hardLeathery wings
    • Small, crawls on bottomSwims moving hind legs alternatingBack legs move at same timeSwims on surface“Crawls” through water, spotted
    • Riffle beetle
    • Water Scavenger Beetle
    • Predaceous Diving Beetle
    • Whirligig Beetle
    • Crawling Water Beetle
    • Tan lives on surfaceDark lives on surfaceGrasping front legs up to 3 inchesSwims on back, back whiteSwims right side up, back blackLong breathing tube, grasping front legsLong stick-like
    • Marsh Treader
    • Water Strider
    • Giant Water Bug
    • Backswimmer
    • Water Boatman
    • Water Scorpion ‘Nepa’
    • Water Scorpion ‘Ranatra’
    • No obvious “tails”One or two “tails”Three “tails”
    • Brown, leather like, 6 legs, usually “c” shaped.6 legs, and prolegs on abdomen.Suction cup like.Large body, hinged mouth.Green, tan, orange or white body.Lives in stone case. Lives in stick house.
    • Riffle Beetle Larva
    • Pyralid Caterpillar
    • Water Penny
    • Dragon Fly Larva
    • No Case Caddisfly Larva
    • Stone Case Caddisfly Larva
    • Wood Case Caddisfy Larva
    • Dark head, green or tan body, two brush liketails. Small “spines” on side Large mouth parts. “spines” on side.“Tails” long and stiff, long antennas. Flat gills on abdomen. Hangs from surface, large mouth parts.
    • Caddisfly Larva
    • Alderfly Larva
    • Dobsonfly Larva
    • Stonefly Larva
    • Mayfly Larva
    • Predaceous Diving Beetle Larva
    • Long “tails” gills on abdomen.Large legs leathery gills.Plate like “tails", no gills on abdomen.
    • Mayfly Larva
    • Mayfly larva
    • Damselfly Larva