macroinvertebrates for stream assessment Flashcards
1
Q
A
- Leech
- small body, ends with suction pads. Flat & Broad segmented.
- GROUP 3 TAXA/POLLUTION TOLERANT
2
Q
A
- Alderfly Larva
- Looks like small Hellgrammite, but has 1 long thin branched tail at back end (no hooks)
- 6 legs + fake legs
- GROUP 2 TAXA/SOMEWHAT SENSITIVE
3
Q
A
- Aquatic Worm
- very tiny, thin worm-like body
- Tangled, threadlike
- GROUP 3 TAXA/POLLUTION TOLERANT
4
Q
A
- Beetle Larva
- 6 legs on upper half of body, feelers, antenna
- GROUP 2 TAXA/SOMEWHAT POLLUTION SENSITIVE
5
Q
A
- Black Fly Larva
- Black/dark-colored head
- Has leg-like structures on its head
- tiny hooks on the end of it’s abdomen
- GROUP 3 TAXA/POLLUTION TOLERANT
6
Q
A
- Caddisfly larva
- 6 hooked legs on upper 3rd of body
- 2 hooks at back end
- May be in a stick, rock or leaf case with its head sticking out
- May have fluffy gill tufts on lower half
- Exactly 6 legs, wormlike, gills on Abdomen
- GROUP ONE TAXA/POLLUTION SENSITIVE
7
Q
A
- Clam or Mussel
- 2 shells
- GROUP 2 TAXA/SOMEWHAT POLLUTION SENSITIVE
8
Q
A
- Crane fly larva
- caterpillar-like segmented body
- 4 finger-like lobes at back end
- GROUP 2 TAXA/SOMEWHAT POLLUTION SENSITIVE
9
Q
A
- Crayfish
- 2 large claws, 8 legs
- lobster-like
- GROUP 2 TAXA/SOMEWHAT POLLUTION SENSITIVE
10
Q
A
- Damselfly nymph
- 6 thin hooked legs
- 3 broad oar-shaped tails positioned like tripod
- Feathery tails large
- Hinged mouth
- GROUP 2 TAXA/SOMEWHAT POLLUTION SENSITIVE
11
Q
A
- Dragonfly nymph
- 6 hooked legs
- wide oval to round abdomen
- Tiny tail
- Hinged mouth, tiny wing pads
- GROUP 2 TAXA/SOMEWHAT POLLUTION SENSITIVE
12
Q
A
- Stonefly nymph
- 6 legs with hooked tips
- antennae
- 2 hair-like tails
- No gills
- GROUP 1 TAXA/POLLUTION SENSITIVE
13
Q
A
- Fishfly Larva
- Looks like small hellgrammite
- Light-colored body with two short, hooked tails
- no gill tufts underneath
- 6 legs + fake legs
- GROUP 2 TAXA/SOMEWHAT POLLUTION SENSITIVE
14
Q
A
- Lunged Snail
- Left opening or shell coiled inward in one plane
- GROUP 3 TAXA/POLLUTION TOLERANT
15
Q
A
- Hellgrammite
- 6 legs, large pinching jaws
- 16 feelers on lower half of body
- Short antennae
- 2 tails and 2 pairs of hooks at back end
- GROUP 1 TAXA/POLLUTION SENSITIVE
16
Q
A
- Mayfly nymph
- 6 large hooked legs
- 2 or 3 long hair like tails
- GROUP 1 TAXA/POLLUTION SENSITIVE
17
Q
A
- Midge Fly Larva
- Worm-like segmented body
- 2 tiny “arms” on each side
- Tiny, curved, segmented
- GROUP 3 TAXA/POLLUTION TOLERANT
18
Q
A
- Riffle Beetle
- Oval body covered with tiny hairs
- 6 legs, antennae
- No tail
- GROUP 1 TAXA/POLLUTION SENSITIVE
19
Q
A
- Scud
- 6+ legs
- shrimp-like
- narrow side to side
- curved in middle
- GROUP 2 TAXA/SOMEWHAT POLLUTION SENSITIVE
20
Q
A
- Aquatic Sowbug
- 7 legs
- flat, wide body
- GROUP 2 TAXA/SOMEWHAT SENSITIVE
21
Q
A
- Water Penny
- Flat, saucer-shaped body with 6 tiny legs
- GROUP 1 TAXA/POLLUTION SENSITIVE
22
Q
A
- Watersnipe Fly Larva
- Many small caterpillar-like legs
- Body is tapered at the head end
- Has two feathery-like projections at its back end
- GROUP 2 TAXA/SOMEWHAT SENSITIVE
23
Q
A
- Gilled Snail
- Right opening
- GROUP 1 TAXA/POLLUTION SENSITIVE
