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Stonefly larva (3 points) | Mayfly larva (3 points) |
| Caddisfly larva (3 points) | Water Penny larva (3 points) |
| Hellgramite (3 points) | Riffle Beetle larva (2 points) |
| Crayfish (2 points) | Gilled Snail (3 points) |
| Midge larva (1 point) | Scud (2 points)
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| Go to Practice Sample Directions | Go to Stream Study Home Page |